diff --git a/docs/models/supported_models.md b/docs/models/supported_models.md
index db650b37a38..f9235618661 100644
--- a/docs/models/supported_models.md
+++ b/docs/models/supported_models.md
@@ -558,6 +558,7 @@ Specified using `--task generate`.
 | `H2OVLChatModel`                             | H2OVL                                                                    | T + I<sup>E+</sup>                                                    | `h2oai/h2ovl-mississippi-800m`, `h2oai/h2ovl-mississippi-2b`, etc.                                                                                      |                        | ✅︎                          | ✅︎\*                  |
 | `Idefics3ForConditionalGeneration`           | Idefics3                                                                 | T + I                                                                 | `HuggingFaceM4/Idefics3-8B-Llama3` etc.                                                                                                                 | ✅︎                     |                             |  ✅︎                   |
 | `InternVLChatModel`                          | InternVL 3.0, InternVideo 2.5, InternVL 2.5, Mono-InternVL, InternVL 2.0 | T + I<sup>E+</sup> + (V<sup>E+</sup>)                                 | `OpenGVLab/InternVL3-9B`, `OpenGVLab/InternVideo2_5_Chat_8B`, `OpenGVLab/InternVL2_5-4B`, `OpenGVLab/Mono-InternVL-2B`, `OpenGVLab/InternVL2-4B`, etc.  | ✅︎                     | ✅︎                          | ✅︎                    |
+| `KeyeForConditionalGeneration`               | Keye-VL-8B-Preview                                                       | T + I<sup>E+</sup> + V<sup>E+</sup>                                   | `Kwai-Keye/Keye-VL-8B-Preview`                                                                                                                          |                        |                             | ✅︎                    |
 | `KimiVLForConditionalGeneration`             | Kimi-VL-A3B-Instruct, Kimi-VL-A3B-Thinking                               | T + I<sup>+</sup>                                                     | `moonshotai/Kimi-VL-A3B-Instruct`, `moonshotai/Kimi-VL-A3B-Thinking`                                                                                    |                        |                             | ✅︎                    |
 | `Llama4ForConditionalGeneration`             | Llama 4                                                                  | T + I<sup>+</sup>                                                     | `meta-llama/Llama-4-Scout-17B-16E-Instruct`, `meta-llama/Llama-4-Maverick-17B-128E-Instruct-FP8`, `meta-llama/Llama-4-Maverick-17B-128E-Instruct`, etc. |                        | ✅︎                          | ✅︎                    |
 | `LlavaForConditionalGeneration`              | LLaVA-1.5                                                                | T + I<sup>E+</sup>                                                    | `llava-hf/llava-1.5-7b-hf`, `TIGER-Lab/Mantis-8B-siglip-llama3` (see note), etc.                                                                        |                        | ✅︎                          | ✅︎                    |
diff --git a/examples/offline_inference/vision_language.py b/examples/offline_inference/vision_language.py
index b9e8bef26eb..b136b14cd8e 100644
--- a/examples/offline_inference/vision_language.py
+++ b/examples/offline_inference/vision_language.py
@@ -429,6 +429,37 @@ def run_internvl(questions: list[str], modality: str) -> ModelRequestData:
     )
 
 
+# Keye-VL
+def run_keye_vl(questions: list[str], modality: str) -> ModelRequestData:
+    model_name = "Kwai-Keye/Keye-VL-8B-Preview"
+
+    engine_args = EngineArgs(
+        model=model_name,
+        max_model_len=8192,
+        trust_remote_code=True,
+        limit_mm_per_prompt={modality: 1},
+    )
+
+    if modality == "image":
+        placeholder = "<|image_pad|>"
+    elif modality == "video":
+        placeholder = "<|video_pad|>"
+
+    prompts = [
+        (
+            f"<|im_start|>user\n<|vision_start|>{placeholder}<|vision_end|>"
+            f"{question}<|im_end|>\n"
+            "<|im_start|>assistant\n"
+        )
+        for question in questions
+    ]
+
+    return ModelRequestData(
+        engine_args=engine_args,
+        prompts=prompts,
+    )
+
+
 # Kimi-VL
 def run_kimi_vl(questions: list[str], modality: str) -> ModelRequestData:
     assert modality == "image"
@@ -1154,6 +1185,7 @@ def run_skyworkr1v(questions: list[str], modality: str) -> ModelRequestData:
     "h2ovl_chat": run_h2ovl,
     "idefics3": run_idefics3,
     "internvl_chat": run_internvl,
+    "keye_vl": run_keye_vl,
     "kimi_vl": run_kimi_vl,
     "llava": run_llava,
     "llava-next": run_llava_next,
diff --git a/examples/offline_inference/vision_language_multi_image.py b/examples/offline_inference/vision_language_multi_image.py
index edddd429364..13af8e90419 100644
--- a/examples/offline_inference/vision_language_multi_image.py
+++ b/examples/offline_inference/vision_language_multi_image.py
@@ -423,6 +423,43 @@ def load_llama4(question: str, image_urls: list[str]) -> ModelRequestData:
     )
 
 
+def load_keye_vl(question: str, image_urls: list[str]) -> ModelRequestData:
+    model_name = "Kwai-Keye/Keye-VL-8B-Preview"
+
+    engine_args = EngineArgs(
+        model=model_name,
+        trust_remote_code=True,
+        max_model_len=8192,
+        max_num_seqs=5,
+        limit_mm_per_prompt={"image": len(image_urls)},
+    )
+
+    placeholders = [{"type": "image", "image": url} for url in image_urls]
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                *placeholders,
+                {"type": "text", "text": question},
+            ],
+        },
+    ]
+
+    processor = AutoProcessor.from_pretrained(model_name, trust_remote_code=True)
+
+    prompt = processor.apply_chat_template(
+        messages, tokenize=False, add_generation_prompt=True
+    )
+
+    image_data = [fetch_image(url) for url in image_urls]
+
+    return ModelRequestData(
+        engine_args=engine_args,
+        prompt=prompt,
+        image_data=image_data,
+    )
+
+
 def load_kimi_vl(question: str, image_urls: list[str]) -> ModelRequestData:
     model_name = "moonshotai/Kimi-VL-A3B-Instruct"
 
@@ -862,6 +899,7 @@ def load_tarsier2(question: str, image_urls: list[str]) -> ModelRequestData:
     "h2ovl_chat": load_h2ovl,
     "idefics3": load_idefics3,
     "internvl_chat": load_internvl,
+    "keye_vl": load_keye_vl,
     "kimi_vl": load_kimi_vl,
     "llava": load_llava,
     "llava-next": load_llava_next,
diff --git a/tests/models/registry.py b/tests/models/registry.py
index affe2e88b2b..d58eb513f52 100644
--- a/tests/models/registry.py
+++ b/tests/models/registry.py
@@ -349,6 +349,8 @@ def check_available_online(
                                          trust_remote_code=True),
     "Idefics3ForConditionalGeneration": _HfExamplesInfo("HuggingFaceM4/Idefics3-8B-Llama3",  # noqa: E501
                                                         {"tiny": "HuggingFaceTB/SmolVLM-256M-Instruct"}),  # noqa: E501
+    "KeyeForConditionalGeneration": _HfExamplesInfo("Kwai-Keye/Keye-VL-8B-Preview", # noqa: E501
+                                                    trust_remote_code=True),
     "KimiVLForConditionalGeneration": _HfExamplesInfo("moonshotai/Kimi-VL-A3B-Instruct",  # noqa: E501
                                                       extras={"thinking": "moonshotai/Kimi-VL-A3B-Thinking"},  # noqa: E501
                                                       trust_remote_code=True,
diff --git a/vllm/entrypoints/chat_utils.py b/vllm/entrypoints/chat_utils.py
index 45f1894d022..a090ab5c90a 100644
--- a/vllm/entrypoints/chat_utils.py
+++ b/vllm/entrypoints/chat_utils.py
@@ -537,7 +537,7 @@ def _placeholder_str(self, modality: ModalityStr,
                 return "<image>"
             if model_type in ("mllama", "llama4"):
                 return "<|image|>"
-            if model_type in ("qwen2_vl", "qwen2_5_vl"):
+            if model_type in ("qwen2_vl", "qwen2_5_vl", "keye", "Keye"):
                 return "<|vision_start|><|image_pad|><|vision_end|>"
             if model_type == "qwen2_5_omni":
                 return "<|vision_start|><|IMAGE|><|vision_end|>"
@@ -567,7 +567,7 @@ def _placeholder_str(self, modality: ModalityStr,
                 return "<video>"
             if model_type == "glm4v":
                 return "<|begin_of_video|><|video|><|end_of_video|>"
-            if model_type in ("qwen2_vl", "qwen2_5_vl"):
+            if model_type in ("qwen2_vl", "qwen2_5_vl", "keye", "Keye"):
                 return "<|vision_start|><|video_pad|><|vision_end|>"
             if model_type == "qwen2_5_omni":
                 return "<|vision_start|><|VIDEO|><|vision_end|>"
diff --git a/vllm/model_executor/models/keye.py b/vllm/model_executor/models/keye.py
new file mode 100644
index 00000000000..84996c44aed
--- /dev/null
+++ b/vllm/model_executor/models/keye.py
@@ -0,0 +1,1725 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+import math
+from collections.abc import Iterable, Mapping, Sequence
+from functools import partial
+from typing import Any, Literal, Optional, TypedDict, Union
+
+import numpy as np
+import torch
+import torch.nn as nn
+from einops import rearrange
+from transformers import PretrainedConfig
+from transformers.activations import GELUActivation
+from transformers.feature_extraction_utils import BatchFeature
+from transformers.modeling_outputs import (BaseModelOutput,
+                                           BaseModelOutputWithPooling)
+from transformers.utils import torch_int
+
+from vllm.config import VllmConfig
+from vllm.distributed import get_tensor_model_parallel_world_size
+from vllm.logger import init_logger
+from vllm.model_executor import SamplingMetadata
+from vllm.model_executor.layers.linear import (ColumnParallelLinear,
+                                               QKVParallelLinear,
+                                               RowParallelLinear)
+from vllm.model_executor.layers.quantization import QuantizationConfig
+from vllm.model_executor.layers.quantization.gptq import GPTQConfig
+from vllm.model_executor.layers.quantization.gptq_marlin import (
+    GPTQMarlinConfig)
+from vllm.model_executor.model_loader.weight_utils import (
+    default_weight_loader, maybe_remap_kv_scale_name)
+from vllm.model_executor.models.module_mapping import MultiModelKeys
+from vllm.multimodal import MULTIMODAL_REGISTRY
+from vllm.multimodal.inputs import (ImageItem, ModalityData,
+                                    MultiModalDataDict, MultiModalFieldConfig,
+                                    MultiModalKwargs, VideoItem)
+from vllm.multimodal.parse import (DictEmbeddingItems, ImageSize,
+                                   ModalityDataItems, MultiModalDataItems,
+                                   MultiModalDataParser)
+from vllm.multimodal.processing import (BaseMultiModalProcessor,
+                                        BaseProcessingInfo, PromptReplacement,
+                                        PromptUpdate)
+from vllm.multimodal.profiling import BaseDummyInputsBuilder
+from vllm.platforms import _Backend
+from vllm.sequence import IntermediateTensors
+from vllm.transformers_utils.config import uses_mrope
+from vllm.transformers_utils.processor import (
+    cached_image_processor_from_config)
+
+from .interfaces import (MultiModalEmbeddings, SupportsLoRA,
+                         SupportsMultiModal, SupportsPP)
+from .siglip import SiglipMLP
+from .utils import (AutoWeightsLoader, WeightsMapper,
+                    init_vllm_registered_model, is_pp_missing_parameter,
+                    maybe_prefix, merge_multimodal_embeddings)
+from .vision import get_vit_attn_backend
+
+logger = init_logger(__name__)
+
+_MAX_FRAMES_PER_VIDEO = 16
+_MAX_IMAGE_SIZE = 9999999
+
+
+def smart_resize(
+    height: int,
+    width: int,
+    factor: int = 28,
+    min_pixels: int = 28 * 28 * 130,
+    max_pixels: int = 28 * 28 * 1280,
+):
+    if height < factor:
+        logger.warning(
+            "smart_resize: height=%s < factor=%s, reset height=factor",
+            height,
+            factor,
+        )
+        width = round((width * factor) / height)
+        height = factor
+
+    if width < factor:
+        logger.warning(
+            "smart_resize: width=%s < factor=%s, reset width=factor",
+            width,
+            factor,
+        )
+        height = round((height * factor) / width)
+        width = factor
+
+    if max(height, width) / min(height, width) > 200:
+        raise ValueError("absolute aspect ratio must be smaller than 200, got "
+                         "{max(height, width) / min(height, width)}")
+    h_bar = round(height / factor) * factor
+    w_bar = round(width / factor) * factor
+    if h_bar * w_bar > max_pixels:
+        beta = math.sqrt((height * width) / max_pixels)
+        h_bar = math.floor(height / beta / factor) * factor
+        w_bar = math.floor(width / beta / factor) * factor
+    elif h_bar * w_bar < min_pixels:
+        beta = math.sqrt(min_pixels / (height * width))
+        h_bar = math.ceil(height * beta / factor) * factor
+        w_bar = math.ceil(width * beta / factor) * factor
+    return h_bar, w_bar
+
+
+class KeyeImagePixelInputs(TypedDict):
+    type: Literal["pixel_values"]
+    pixel_values: torch.Tensor
+    """Shape:
+    `(num_patches, num_channels * patch_size * patch_size)`
+    """
+
+    image_grid_thw: torch.Tensor
+    """Shape: `(num_images, 3)`
+    This should be in `(grid_t, grid_h, grid_w)` format.
+    """
+
+
+class KeyeImageEmbeddingInputs(TypedDict):
+    type: Literal["image_embeds"]
+    image_embeds: torch.Tensor
+    """Supported types:
+    - list[`torch.Tensor`]: A list of tensors holding all images' features.
+        Each tensor holds an image's features.
+    - `torch.Tensor`: A tensor holding all images' features
+        (concatenation of all images' feature tensors).
+    
+    Tensor shape: `(num_image_features, hidden_size)`
+    - `num_image_features` varies based on
+        the number and resolution of the images.
+    - `hidden_size` must match the hidden size of language model backbone.
+    """
+
+    image_grid_thw: torch.Tensor
+    """Shape: `(num_images, 3)`
+    This should be in `(grid_t, grid_h, grid_w)` format.
+    """
+
+
+KeyeImageInputs = Union[KeyeImagePixelInputs, KeyeImageEmbeddingInputs]
+
+
+class KeyeVideoPixelInputs(TypedDict):
+    type: Literal["pixel_values_videos"]
+    pixel_values_videos: torch.Tensor
+    """Shape:
+    `(num_patches,
+      num_channels * temporal_patch_size * patch_size * patch_size)`
+    """
+
+    video_grid_thw: torch.Tensor
+    """Shape: `(num_videos, 3)`
+
+    This should be in `(grid_t, grid_h, grid_w)` format.
+    """
+
+
+class KeyeVideoEmbeddingInputs(TypedDict):
+    type: Literal["video_embeds"]
+    video_embeds: torch.Tensor
+    """Supported types:
+    - list[`torch.Tensor`]: A list of tensors holding all videos' features.
+        Each tensor holds an video's features.
+    - `torch.Tensor`: A tensor holding all videos' features
+        (concatenation of all videos' feature tensors).
+    
+    Tensor shape: `(num_image_features, hidden_size)`
+    - `num_image_features` varies based on 
+        the number and resolution of the videos.
+    - `hidden_size` must match the hidden size of language model backbone.
+    """
+
+    video_grid_thw: torch.Tensor
+    """Shape: `(num_videos, 3)`
+    This should be in `(grid_t, grid_h, grid_w)` format.
+    """
+
+
+KeyeVideoInputs = Union[KeyeVideoPixelInputs, KeyeVideoEmbeddingInputs]
+
+
+class KeyeVisionEmbeddings(nn.Module):
+
+    def __init__(self, config: PretrainedConfig):
+        super().__init__()
+        self.config = config
+        self.embed_dim = config.hidden_size
+        self.image_size = config.image_size
+        self.patch_size = config.patch_size
+
+        self.patch_embedding = nn.Conv2d(
+            in_channels=config.num_channels,
+            out_channels=self.embed_dim,
+            kernel_size=self.patch_size,
+            stride=self.patch_size,
+            padding="valid",
+        )
+
+        self.num_patches = (self.image_size // self.patch_size)**2
+        self.num_positions = self.num_patches
+        self.cache_position_embedding = dict()
+        self.cache_position_count = dict()
+        self.position_embedding = nn.Embedding(self.num_positions,
+                                               self.embed_dim)
+        self.packing_position_embedding = nn.Embedding(32768, self.embed_dim)
+
+        self.register_buffer(
+            "position_ids",
+            torch.arange(self.num_positions).expand((1, -1)),
+            persistent=False,
+        )
+
+    def interpolate_pos_encoding(
+        self,
+        embeddings: torch.Tensor,
+        height: int,
+        width: int,
+        is_after_patchify: bool = False,
+    ) -> torch.Tensor:
+
+        num_positions = self.position_embedding.weight.shape[0]
+
+        patch_pos_embed = self.position_embedding.weight.unsqueeze(0)
+
+        dim = embeddings.shape[-1]
+
+        if is_after_patchify:
+            new_height = height
+            new_width = width
+        else:
+            new_height = height // self.patch_size
+            new_width = width // self.patch_size
+
+        sqrt_num_positions = torch_int(num_positions**0.5)
+        patch_pos_embed = patch_pos_embed.reshape(1, sqrt_num_positions,
+                                                  sqrt_num_positions, dim)
+        patch_pos_embed = patch_pos_embed.permute(0, 3, 1, 2)
+
+        patch_pos_embed = nn.functional.interpolate(
+            patch_pos_embed,
+            size=(new_height, new_width),
+            mode="bilinear",
+            align_corners=False,
+        )
+
+        patch_pos_embed = patch_pos_embed.permute(0, 2, 3, 1).view(1, -1, dim)
+        return patch_pos_embed
+
+    def fetch_position_embedding_lfu_cache(self,
+                                           embeddings,
+                                           h,
+                                           w,
+                                           max_cache: int = 20):
+        grid = (h, w)
+        if grid in self.cache_position_embedding:
+            self.cache_position_count[grid] += 1
+            return self.cache_position_embedding[grid]
+
+        if len(self.cache_position_embedding) >= max_cache:
+            min_hit_grid = min(
+                self.cache_position_count,
+                key=self.cache_position_count.get,
+            )
+            self.cache_position_count.pop(min_hit_grid)
+            self.cache_position_embedding.pop(min_hit_grid)
+
+        position_embedding = self.interpolate_pos_encoding(
+            embeddings, h, w, True)
+        self.cache_position_count[grid] = 1
+        self.cache_position_embedding[grid] = position_embedding
+        return position_embedding
+
+    def forward(
+        self,
+        pixel_values: torch.FloatTensor,
+        position_ids: Optional[torch.Tensor] = None,
+        image_grid_thw: Optional[list[Union[
+            tuple[int, int, int],
+            list[tuple[int, int, int]],
+        ]]] = None,
+        interpolate_pos_encoding=False,
+    ) -> torch.Tensor:
+        if pixel_values.dim() == 4:
+            pixel_values = pixel_values.unsqueeze(0)
+        if pixel_values.dim() == 5:
+            if position_ids is None:
+                raise ValueError(
+                    "position_ids cannot be None when pixel_values.dim() is 5."
+                )
+            (
+                batch_size,
+                squence_len,
+                channel,
+                height,
+                width,
+            ) = pixel_values.shape
+            target_dtype = self.patch_embedding.weight.dtype
+            pixel_values = rearrange(pixel_values, "b l c h w -> (b l) c h w")
+            patch_embeds = self.patch_embedding(
+                pixel_values.to(dtype=target_dtype))
+            embeddings = patch_embeds.flatten(-2).squeeze(-1)
+
+            if interpolate_pos_encoding and image_grid_thw is not None:
+                start = 0
+                tmp_embeddings = list()
+                for image_grid in image_grid_thw:
+                    t, h, w = image_grid
+                    end = start + t * h * w
+                    image_embeddings = embeddings[start:end, :]
+                    position_embedding = (self.interpolate_pos_encoding(
+                        image_embeddings, h, w, True).squeeze(0).repeat(t, 1))
+                    image_embeddings = image_embeddings + position_embedding
+                    tmp_embeddings.append(image_embeddings)
+                    start = end
+                embeddings = torch.concat(tmp_embeddings, dim=0).unsqueeze(0)
+            else:
+                embeddings = embeddings + self.packing_position_embedding(
+                    position_ids)
+            return embeddings
+        else:
+            raise ValueError("Unsupported pixel_values dimension:"
+                             f" {pixel_values.dim()}. Expected 4 or 5.")
+
+
+def apply_rotary_pos_emb_flashatt(
+    q: torch.Tensor,
+    k: torch.Tensor,
+    cos: torch.Tensor,
+    sin: torch.Tensor,
+) -> tuple[torch.Tensor, torch.Tensor]:
+    cos = cos.chunk(2, dim=-1)[0].contiguous()
+    sin = sin.chunk(2, dim=-1)[0].contiguous()
+
+    from vllm.vllm_flash_attn.layers.rotary import apply_rotary_emb
+
+    q_embed = apply_rotary_emb(q.float(), cos.float(), sin.float()).type_as(q)
+    k_embed = apply_rotary_emb(k.float(), cos.float(), sin.float()).type_as(k)
+    return q_embed, k_embed
+
+
+class KeyeSiglipAttention(nn.Module):
+    """Multi-headed attention from 'Attention Is All You
+    Need' paper."""
+
+    def __init__(
+        self,
+        config: PretrainedConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ):
+        super().__init__()
+        self.config = config
+
+        hidden_size = config.hidden_size
+        self.hidden_size = config.hidden_size
+        tp_size = get_tensor_model_parallel_world_size()
+        self.total_num_heads = config.num_attention_heads
+        assert self.total_num_heads % tp_size == 0
+        self.num_heads = self.total_num_heads // tp_size
+        self.total_num_kv_heads = config.num_attention_heads
+        if self.total_num_kv_heads >= tp_size:
+            assert self.total_num_kv_heads % tp_size == 0
+        else:
+            assert tp_size % self.total_num_kv_heads == 0
+        self.num_kv_heads = max(1, self.total_num_kv_heads // tp_size)
+        self.head_dim = config.hidden_size // self.total_num_heads
+        self.q_size = self.num_heads * self.head_dim
+        self.kv_size = self.num_kv_heads * self.head_dim
+        self.scale = self.head_dim**-0.5
+
+        self.qkv_proj = QKVParallelLinear(
+            hidden_size,
+            self.head_dim,
+            self.total_num_heads,
+            self.total_num_kv_heads,
+            bias=True,
+            quant_config=quant_config,
+            prefix=f"{prefix}.qkv_proj",
+        )
+        self.out_proj = RowParallelLinear(
+            input_size=hidden_size,
+            output_size=hidden_size,
+            quant_config=quant_config,
+            prefix=f"{prefix}.out_proj",
+        )
+
+        # Detect attention implementation.
+        self.attn_backend: _Backend = get_vit_attn_backend(support_fa=True)
+        if self.attn_backend not in {_Backend.FLASH_ATTN, _Backend.XFORMERS}:
+            raise RuntimeError(
+                f"Keye-VL does not support {self.attn_backend} backend now.")
+
+    def forward(
+        self,
+        hidden_states: torch.Tensor,
+        attention_mask: Optional[torch.Tensor] = None,
+        output_attentions: Optional[bool] = False,
+        cu_seqlens: Optional[list[torch.Tensor]] = None,
+        rope_emb: Optional[tuple[torch.Tensor, torch.Tensor]] = None,
+    ) -> torch.Tensor:
+        qkv, _ = self.qkv_proj(hidden_states)
+        q, k, v = qkv.split(
+            [self.q_size, self.kv_size, self.kv_size],
+            dim=-1,
+        )
+
+        max_seqlen = (cu_seqlens[1:] - cu_seqlens[:-1]).max().item()
+        seqlens = (cu_seqlens[1:] - cu_seqlens[:-1]).tolist()
+        batch_size = q.shape[0]
+
+        if rope_emb is None:
+            q = q.view(*q.shape[:-1], self.num_heads, self.head_dim)
+            k = k.view(
+                *k.shape[:-1],
+                self.num_kv_heads,
+                self.head_dim,
+            )
+            v = v.view(
+                *v.shape[:-1],
+                self.num_kv_heads,
+                self.head_dim,
+            )
+        else:
+            if cu_seqlens is None:
+                raise ValueError(
+                    "cu_seqlens cannot be None when rope_emb is not None.")
+            cos, sin = rope_emb
+            q = q.view(*q.shape[:-1], self.num_heads, self.head_dim)
+            k = k.view(
+                *k.shape[:-1],
+                self.num_kv_heads,
+                self.head_dim,
+            )
+            q, k = apply_rotary_pos_emb_flashatt(q, k, cos, sin)
+            v = v.view(
+                *v.shape[:-1],
+                self.num_kv_heads,
+                self.head_dim,
+            )
+
+        if self.attn_backend == _Backend.FLASH_ATTN:
+            from flash_attn import flash_attn_varlen_func
+
+            q, k, v = (rearrange(x, "b s ... -> (b s) ...") for x in [q, k, v])
+
+            output = flash_attn_varlen_func(
+                q,
+                k,
+                v,
+                cu_seqlens_q=cu_seqlens,
+                cu_seqlens_k=cu_seqlens,
+                max_seqlen_q=max_seqlen,
+                max_seqlen_k=max_seqlen,
+                causal=False,
+                softmax_scale=self.scale,
+            )
+            context_layer = rearrange(output,
+                                      "(b s) ... -> b s ...",
+                                      b=batch_size)
+        elif self.attn_backend == _Backend.XFORMERS:
+            from xformers import ops as xops
+            from xformers.ops.fmha.attn_bias import BlockDiagonalMask
+
+            attn_bias = BlockDiagonalMask.from_seqlens(q_seqlen=seqlens,
+                                                       kv_seqlen=None,
+                                                       device=q.device)
+
+            context_layer = xops.memory_efficient_attention_forward(
+                q, k, v, attn_bias=attn_bias, p=0, scale=None)
+
+        context_layer = rearrange(context_layer,
+                                  "b s h d -> b s (h d)").contiguous()
+
+        output, _ = self.out_proj(context_layer)
+        return output
+
+
+class SigLIPRotaryEmbedding(nn.Module):
+
+    def __init__(self, dim: int, theta: float = 10000.0) -> None:
+        super().__init__()
+        self.dim = dim
+        self.theta = theta
+        self.rope_init()
+
+    def rope_init(self):
+        inv_freq = 1.0 / (self.theta**(
+            torch.arange(0, self.dim, 2, dtype=torch.float) / self.dim))
+        self.register_buffer("inv_freq", inv_freq, persistent=False)
+
+    def forward(self, seqlen: int) -> torch.Tensor:
+        seq = torch.arange(
+            seqlen,
+            device=self.inv_freq.device,
+            dtype=self.inv_freq.dtype,
+        )
+        freqs = torch.outer(seq, self.inv_freq)
+        return freqs
+
+
+class KeyeSiglipEncoderLayer(nn.Module):
+
+    def __init__(
+        self,
+        config: Union[PretrainedConfig],
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ):
+        super().__init__()
+        self.embed_dim = config.hidden_size
+        self.layer_norm1 = nn.LayerNorm(self.embed_dim,
+                                        eps=config.layer_norm_eps)
+        self.self_attn = KeyeSiglipAttention(
+            config,
+            quant_config=quant_config,
+            prefix=f"{prefix}.self_attn",
+        )
+        self.layer_norm2 = nn.LayerNorm(self.embed_dim,
+                                        eps=config.layer_norm_eps)
+        self.mlp = SiglipMLP(
+            config,
+            quant_config=quant_config,
+            prefix=f"{prefix}.mlp",
+        )
+
+    def forward(
+        self,
+        hidden_states: torch.Tensor,
+        attention_mask: torch.Tensor,
+        output_attentions: Optional[bool] = False,
+        cu_seqlens: Optional[list[torch.Tensor]] = None,
+        rope_emb: Optional[tuple[torch.Tensor, torch.Tensor]] = None,
+    ) -> tuple[torch.FloatTensor]:
+
+        residual = hidden_states
+
+        hidden_states = self.layer_norm1(hidden_states)
+        hidden_states = self.self_attn(
+            hidden_states=hidden_states,
+            attention_mask=attention_mask,
+            output_attentions=output_attentions,
+            cu_seqlens=cu_seqlens,
+            rope_emb=rope_emb,
+        )
+
+        hidden_states = residual + hidden_states
+
+        residual = hidden_states
+        hidden_states = self.layer_norm2(hidden_states)
+        hidden_states = self.mlp(hidden_states)
+
+        hidden_states = residual + hidden_states
+
+        return hidden_states
+
+
+class KeyeSiglipEncoder(nn.Module):
+
+    def __init__(
+        self,
+        config: PretrainedConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ):
+        super().__init__()
+        self.config = config
+        embed_dim = config.hidden_size
+        num_heads = config.num_attention_heads
+        head_dim = embed_dim // num_heads
+        self.layers = nn.ModuleList([
+            KeyeSiglipEncoderLayer(
+                config,
+                quant_config=quant_config,
+                prefix=f"{prefix}.layers.{layer_idx}",
+            ) for layer_idx in range(config.num_hidden_layers)
+        ])
+        self.rotary_pos_emb = SigLIPRotaryEmbedding(head_dim // 2)
+
+    @staticmethod
+    def flatten_list(image_grid_thw):
+        tmp_image_grid_thw = list()
+        for image_grid in image_grid_thw:
+            if isinstance(image_grid, list):
+                tmp_image_grid_thw.extend(image_grid)
+            else:
+                tmp_image_grid_thw.append(image_grid)
+        return tmp_image_grid_thw
+
+    def forward(
+        self,
+        inputs_embeds,
+        attention_mask: Optional[torch.Tensor] = None,
+        output_attentions: Optional[bool] = None,
+        output_hidden_states: Optional[bool] = None,
+        cu_seqlens: Optional[list[torch.Tensor]] = None,
+        image_grid_thw: Optional[list[Union[
+            tuple[int, int, int],
+            list[tuple[int, int, int]],
+        ]]] = None,
+        height_position_ids: Optional[torch.Tensor] = None,
+        width_position_ids: Optional[torch.Tensor] = None,
+        use_rope: Optional[bool] = False,
+        window_size: Optional[bool] = -1,
+        vision_or_text: str = "vision",
+    ) -> BaseModelOutput:
+        device = inputs_embeds.device
+        hidden_states = inputs_embeds
+        if use_rope is True:
+            flatten_image_grid_thw = self.flatten_list(image_grid_thw)
+
+            if width_position_ids is None or height_position_ids is None:
+                split_hids = list()
+                split_wids = list()
+                for t, h, w in flatten_image_grid_thw:
+                    image_pids = torch.arange(t * h * w,
+                                              device=device) % (h * w)
+                    sample_hids = image_pids // w
+                    sample_wids = image_pids % w
+                    split_hids.append(sample_hids)
+                    split_wids.append(sample_wids)
+                width_position_ids = torch.concat(split_wids, dim=0)
+                height_position_ids = torch.concat(split_hids, dim=0)
+
+            pids = torch.stack(
+                [height_position_ids, width_position_ids],
+                dim=-1,
+            )
+            max_grid_size = pids.max() + 1
+            rope_emb_max_grid = self.rotary_pos_emb(max_grid_size)
+            rope_emb = rope_emb_max_grid[pids].flatten(1)
+            rope_emb = rope_emb.repeat(1, 2)
+            rope_emb = (rope_emb.cos(), rope_emb.sin())
+        else:
+            rope_emb = None
+
+        attn_cu_seqlens = cu_seqlens
+        hidden_states = inputs_embeds
+        assert attention_mask is None
+
+        for encoder_layer in self.layers:
+            hidden_states = encoder_layer(
+                hidden_states,
+                attention_mask,
+                output_attentions=output_attentions,
+                cu_seqlens=attn_cu_seqlens,
+                rope_emb=rope_emb,
+            )
+        return hidden_states
+
+
+class KeyeSiglipVisionTransformer(nn.Module):
+
+    def __init__(
+        self,
+        config: PretrainedConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ):
+        super().__init__()
+        self.config = config
+        embed_dim = config.hidden_size
+
+        self.embeddings = KeyeVisionEmbeddings(config)
+        self.encoder = KeyeSiglipEncoder(
+            config,
+            quant_config=quant_config,
+            prefix=f"{prefix}.encoder",
+        )
+        self.post_layernorm = nn.LayerNorm(embed_dim,
+                                           eps=config.layer_norm_eps)
+
+    def forward(
+        self,
+        pixel_values,
+        output_attentions: Optional[bool] = None,
+        output_hidden_states: Optional[bool] = None,
+        interpolate_pos_encoding: Optional[bool] = False,
+        attention_mask: Optional[torch.Tensor] = None,
+        sample_indices: Optional[torch.Tensor] = None,
+        image_indices: Optional[torch.Tensor] = None,
+        position_ids: Optional[torch.Tensor] = None,
+        height_position_ids: Optional[torch.Tensor] = None,
+        width_position_ids: Optional[torch.Tensor] = None,
+        cu_seqlens: Optional[list[torch.Tensor]] = None,
+        padding_mask: Optional[torch.Tensor] = None,
+        vision_return_embed_list: Optional[bool] = False,
+        image_grid_thw: Optional[list[Union[
+            tuple[int, int, int],
+            list[tuple[int, int, int]],
+        ]]] = None,
+        return_pooler_output: Optional[bool] = True,
+        use_rope: Optional[bool] = False,
+        window_size: Optional[bool] = -1,
+    ) -> BaseModelOutputWithPooling:
+
+        hidden_states = self.embeddings(
+            pixel_values,
+            interpolate_pos_encoding=interpolate_pos_encoding,
+            position_ids=position_ids,
+            image_grid_thw=image_grid_thw,
+        )
+
+        last_hidden_state = self.encoder(
+            inputs_embeds=hidden_states,
+            output_attentions=output_attentions,
+            output_hidden_states=output_hidden_states,
+            attention_mask=attention_mask,
+            cu_seqlens=cu_seqlens,
+            image_grid_thw=image_grid_thw,
+            use_rope=use_rope,
+            height_position_ids=height_position_ids,
+            width_position_ids=width_position_ids,
+            window_size=window_size,
+            vision_or_text="vision",
+        )
+
+        last_hidden_state = self.post_layernorm(last_hidden_state)
+
+        sample_hidden_state = list()
+        if cu_seqlens is None:
+            raise ValueError("cu_seqlens cannot be None for "
+                             "SiglipVisionTransformer output processing.")
+        for i in range(cu_seqlens.shape[0] - 1):
+            start = cu_seqlens[i]
+            end = cu_seqlens[i + 1]
+            tensor = last_hidden_state[:, start:end, :].squeeze(0)
+            sample_hidden_state.append(tensor)
+
+        return sample_hidden_state
+
+
+class KeyeSiglipVisionModel(nn.Module):
+    config_class = PretrainedConfig
+    main_input_name = "pixel_values"
+
+    def __init__(
+        self,
+        config: PretrainedConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ):
+        super().__init__()
+
+        self.vision_model = KeyeSiglipVisionTransformer(
+            config,
+            quant_config=quant_config,
+            prefix=f"{prefix}.vision_model",
+        )
+        self.quant_config = quant_config
+
+    @property
+    def dtype(self) -> torch.dtype:
+        return self.vision_model.embeddings.patch_embedding.weight.dtype
+
+    @property
+    def device(self) -> torch.device:
+        return self.vision_model.embeddings.patch_embedding.weight.device
+
+    def get_input_embeddings(self) -> nn.Module:
+        return self.vision_model.embeddings.patch_embedding
+
+    def forward(
+        self,
+        pixel_values,
+        sample_indices: Optional[torch.Tensor] = None,
+        output_attentions: Optional[bool] = None,
+        output_hidden_states: Optional[bool] = None,
+        interpolate_pos_encoding: bool = False,
+        position_ids: Optional[torch.Tensor] = None,
+        vision_return_embed_list: Optional[bool] = False,
+        image_grid_thw: Optional[list[Union[
+            tuple[int, int, int],
+            list[tuple[int, int, int]],
+        ]]] = None,
+        cu_seqlens: Optional[list[torch.Tensor]] = None,
+        return_pooler_output: Optional[bool] = True,
+        use_rope: Optional[bool] = False,
+        window_size: Optional[bool] = -1,
+    ) -> BaseModelOutputWithPooling:
+
+        return self.vision_model(
+            pixel_values=pixel_values,
+            output_attentions=output_attentions,
+            output_hidden_states=output_hidden_states,
+            interpolate_pos_encoding=interpolate_pos_encoding,
+            position_ids=position_ids,
+            vision_return_embed_list=vision_return_embed_list,
+            image_grid_thw=image_grid_thw,
+            sample_indices=sample_indices,
+            cu_seqlens=cu_seqlens,
+            return_pooler_output=return_pooler_output,
+            use_rope=use_rope,
+            window_size=window_size,
+        )
+
+    def load_weights(self, weights: Iterable[tuple[str,
+                                                   torch.Tensor]]) -> set[str]:
+        stacked_params_mapping = [
+            ("qkv_proj", "q_proj", "q"),
+            ("qkv_proj", "k_proj", "k"),
+            ("qkv_proj", "v_proj", "v"),
+        ]
+        params_dict = dict(self.named_parameters(remove_duplicate=False))
+        loaded_params: set[str] = set()
+        for name, loaded_weight in weights:
+            if "rotary_emb.inv_freq" in name:
+                continue
+            if "head.attention" in name or "head.layernorm" in name:
+                continue
+            if "head.mlp" in name or "head.probe" in name:
+                continue
+            if self.quant_config is not None and (
+                    scale_name := self.quant_config.get_cache_scale(name)):
+                param = params_dict[scale_name]
+                weight_loader = getattr(
+                    param,
+                    "weight_loader",
+                    default_weight_loader,
+                )
+                loaded_weight = (loaded_weight if loaded_weight.dim() == 0 else
+                                 loaded_weight[0])
+                weight_loader(param, loaded_weight)
+                loaded_params.add(scale_name)
+                continue
+            for (
+                    param_name,
+                    weight_name,
+                    shard_id,
+            ) in stacked_params_mapping:
+                if weight_name not in name:
+                    continue
+                name = name.replace(weight_name, param_name)
+                if name.endswith(".bias") and name not in params_dict:
+                    continue
+                if is_pp_missing_parameter(name, self):
+                    continue
+                param = params_dict[name]
+                weight_loader = param.weight_loader
+                weight_loader(param, loaded_weight, shard_id)
+                break
+            else:
+                if name.endswith(".bias") and name not in params_dict:
+                    continue
+                name = maybe_remap_kv_scale_name(name, params_dict)
+                if name is None:
+                    continue
+                if is_pp_missing_parameter(name, self):
+                    continue
+                param = params_dict[name]
+                weight_loader = getattr(
+                    param,
+                    "weight_loader",
+                    default_weight_loader,
+                )
+                weight_loader(param, loaded_weight)
+            loaded_params.add(name)
+        return loaded_params
+
+
+class Projector(nn.Module):
+
+    def __init__(
+        self,
+        text_config: PretrainedConfig,
+        vision_config: PretrainedConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ):
+        super().__init__()
+        self.text_config = text_config
+        self.vision_config = vision_config
+        self.merge_kernel_size = (2, 2)
+
+        self.hidden_size = (self.vision_config.hidden_size *
+                            self.merge_kernel_size[0] *
+                            self.merge_kernel_size[1])
+
+        self.pre_norm = torch.nn.LayerNorm(self.vision_config.hidden_size,
+                                           eps=1e-05)
+        self.act = GELUActivation()
+
+        self.linear_1 = ColumnParallelLinear(
+            self.hidden_size,
+            self.hidden_size,
+            bias=True,
+            quant_config=quant_config,
+            prefix=f"{prefix}.linear_1",
+        )
+        self.linear_2 = RowParallelLinear(
+            self.hidden_size,
+            self.text_config.hidden_size,
+            bias=True,
+            quant_config=quant_config,
+            prefix=f"{prefix}.linear_2",
+        )
+
+    def forward(
+        self,
+        image_features: torch.Tensor,
+        image_grid_thw: list[tuple[int, int, int]],
+    ) -> torch.Tensor:
+        m1, m2 = self.merge_kernel_size
+        if isinstance(image_features, (list, tuple)):
+            processed_features = list()
+            for image_feature, image_grid in zip(image_features,
+                                                 image_grid_thw):
+                image_feature = self.pre_norm(image_feature)
+                t, h, w = image_grid
+
+                image_feature = rearrange(
+                    image_feature,
+                    "(t h p1 w p2) d -> (t h w) (p1 p2 d)",
+                    t=t,
+                    h=h // m1,
+                    p1=m1,
+                    w=w // m2,
+                    p2=m2,
+                )
+                hidden_states, _ = self.linear_1(image_feature)
+                hidden_states = self.act(hidden_states)
+                hidden_states, _ = self.linear_2(hidden_states)
+                processed_features.append(hidden_states)
+
+            return processed_features
+
+        dims = image_features.shape[:-1]
+        dim = image_features.shape[-1]
+        image_features = image_features.view(np.prod(dims), dim)
+        hidden_states = self.pre_norm(image_features).view(
+            -1, self.hidden_size)
+        hidden_states = self.linear_1(hidden_states)
+        hidden_states = self.act(hidden_states)
+        hidden_states = self.linear_2(hidden_states)
+
+        return hidden_states.view(*dims, -1)
+
+
+def _keye_field_config(hf_inputs: Mapping[str, torch.Tensor], ):
+    image_grid_thw = hf_inputs.get("image_grid_thw", torch.empty((0, 3)))
+    image_grid_sizes = image_grid_thw.prod(-1)
+
+    video_grid_thw = hf_inputs.get("video_grid_thw", torch.empty((0, 3)))
+    video_grid_sizes = video_grid_thw.prod(-1)
+
+    return dict(
+        pixel_values=MultiModalFieldConfig.flat_from_sizes(
+            "image", image_grid_sizes),
+        image_embeds=MultiModalFieldConfig.flat_from_sizes(
+            "image", image_grid_sizes),
+        image_grid_thw=MultiModalFieldConfig.batched("image"),
+        pixel_values_videos=MultiModalFieldConfig.flat_from_sizes(
+            "video", video_grid_sizes),
+        video_embeds=MultiModalFieldConfig.flat_from_sizes(
+            "video", video_grid_sizes),
+        video_grid_thw=MultiModalFieldConfig.batched("video"),
+    )
+
+
+class KeyeMultiModalDataParser(MultiModalDataParser):
+
+    def _parse_image_data(
+        self,
+        data: Union[dict[str, torch.Tensor], ModalityData[ImageItem]],
+    ) -> ModalityDataItems[Any, Any]:
+        if isinstance(data, dict):
+            return DictEmbeddingItems(
+                data,
+                modality="image",
+                required_fields={
+                    "image_embeds",
+                    "image_grid_thw",
+                },
+                fields_factory=_keye_field_config,
+            )
+
+        return super()._parse_image_data(data)
+
+    def _parse_video_data(
+        self,
+        data: Union[dict[str, torch.Tensor], ModalityData[VideoItem]],
+    ) -> ModalityDataItems[Any, Any]:
+        if isinstance(data, dict):
+            return DictEmbeddingItems(
+                data,
+                modality="video",
+                required_fields={
+                    "video_embeds",
+                    "video_grid_thw",
+                },
+                fields_factory=_keye_field_config,
+            )
+
+        return super()._parse_video_data(data)
+
+
+class KeyeProcessingInfo(BaseProcessingInfo):
+
+    def get_hf_config(self):
+        return self.ctx.get_hf_config(PretrainedConfig)
+
+    def get_hf_processor(
+        self,
+        *,
+        min_pixels: Optional[int] = None,
+        max_pixels: Optional[int] = None,
+        size: Optional[dict[str, int]] = None,
+        **kwargs: object,
+    ):
+        return self.ctx.get_hf_processor(
+            image_processor=self.get_image_processor(
+                min_pixels=min_pixels,
+                max_pixels=max_pixels,
+                size=size,
+            ),
+            **kwargs,
+        )
+
+    def _get_image_processor_kwargs(
+        self,
+        *,
+        min_pixels: Optional[int] = None,
+        max_pixels: Optional[int] = None,
+        size: Optional[dict[str, int]] = None,
+        **kwargs: object,
+    ):
+        if self.ctx.model_config.mm_processor_kwargs:
+            kwargs.update(self.ctx.model_config.mm_processor_kwargs)
+
+        if min_pixels is not None:
+            kwargs["min_pixels"] = min_pixels
+
+            if size is None:
+                size = {"shortest_edge": min_pixels}
+            else:
+                size["shortest_edge"] = min_pixels
+
+        if max_pixels is not None:
+            kwargs["max_pixels"] = max_pixels
+
+            if size is None:
+                size = {"longest_edge": max_pixels}
+            else:
+                size["longest_edge"] = max_pixels
+
+        if size is not None:
+            kwargs["size"] = size
+
+        return kwargs
+
+    def get_image_processor(
+        self,
+        *,
+        min_pixels: Optional[int] = None,
+        max_pixels: Optional[int] = None,
+        size: Optional[dict[str, int]] = None,
+        **kwargs: object,
+    ):
+        return cached_image_processor_from_config(
+            self.ctx.model_config,
+            **self._get_image_processor_kwargs(
+                min_pixels=min_pixels,
+                max_pixels=max_pixels,
+                size=size,
+                **kwargs,
+            ),
+        )
+
+    def get_supported_mm_limits(self, ) -> Mapping[str, Optional[int]]:
+        return {"image": None, "video": None}
+
+    def get_mm_max_tokens_per_item(
+        self,
+        seq_len: int,
+        mm_counts: Mapping[str, int],
+    ) -> Mapping[str, int]:
+        return {
+            "image": self.get_max_image_tokens(),
+            "video": self.get_max_video_tokens(seq_len),
+        }
+
+    def _get_vision_info(
+        self,
+        *,
+        image_width: int,
+        image_height: int,
+        num_frames: int = 1,
+        do_resize: bool = True,
+        image_processor,
+    ) -> tuple[ImageSize, int]:
+        if image_processor is None:
+            image_processor = self.get_image_processor()
+
+        hf_config = self.get_hf_config()
+        vision_config = hf_config.vision_config
+        patch_size = vision_config.patch_size
+        merge_size = vision_config.spatial_merge_size
+        temporal_patch_size = 1
+
+        if do_resize:
+            resized_height, resized_width = smart_resize(
+                height=image_height,
+                width=image_width,
+                factor=patch_size * merge_size,
+                min_pixels=image_processor.min_pixels,
+                max_pixels=image_processor.max_pixels,
+            )
+            preprocessed_size = ImageSize(width=resized_width,
+                                          height=resized_height)
+        else:
+            preprocessed_size = ImageSize(width=image_width,
+                                          height=image_height)
+
+        padded_num_frames = num_frames + num_frames % temporal_patch_size
+
+        grid_t = max(padded_num_frames // temporal_patch_size, 1)
+        grid_h = preprocessed_size.height // patch_size
+        grid_w = preprocessed_size.width // patch_size
+
+        num_patches = grid_t * grid_h * grid_w
+        num_vision_tokens = num_patches // (merge_size**2)
+
+        return preprocessed_size, num_vision_tokens
+
+    def get_num_image_tokens(
+        self,
+        *,
+        image_width: int,
+        image_height: int,
+        image_processor,
+    ) -> int:
+        _, num_image_tokens = self._get_vision_info(
+            image_width=image_width,
+            image_height=image_height,
+            image_processor=image_processor,
+        )
+        return num_image_tokens
+
+    def get_num_video_tokens(
+        self,
+        *,
+        image_width: int,
+        image_height: int,
+        num_frames: int,
+        image_processor,
+    ) -> int:
+        _, num_video_tokens = self._get_vision_info(
+            image_width=image_width,
+            image_height=image_height,
+            num_frames=num_frames,
+            image_processor=image_processor,
+        )
+        return num_video_tokens
+
+    def get_image_size_with_most_features(self, ) -> ImageSize:
+        max_image_size, _ = self._get_vision_info(
+            image_width=_MAX_IMAGE_SIZE,
+            image_height=_MAX_IMAGE_SIZE,
+            image_processor=None,
+        )
+        return max_image_size
+
+    def get_max_image_tokens(self) -> int:
+        target_width, target_height = self.get_image_size_with_most_features()
+
+        return self.get_num_image_tokens(
+            image_width=target_width,
+            image_height=target_height,
+            image_processor=None,
+        )
+
+    def _get_max_video_frames(self, max_tokens: int) -> int:
+        target_width, target_height = self.get_image_size_with_most_features()
+
+        num_frames = 0
+
+        while True:
+            next_num_frames = num_frames + 1
+            next_max_tokens = self.get_num_video_tokens(
+                image_width=target_width,
+                image_height=target_height,
+                num_frames=next_num_frames,
+                image_processor=None,
+            )
+
+            if next_max_tokens > max_tokens:
+                break
+
+            num_frames = next_num_frames
+
+        return num_frames
+
+    def get_num_frames_with_most_features(self, seq_len: int) -> int:
+        mm_config = self.ctx.get_mm_config()
+        max_images = mm_config.get_limit_per_prompt("image")
+        max_videos = mm_config.get_limit_per_prompt("video")
+
+        max_image_tokens = self.get_max_image_tokens() * max_images
+        max_total_frames = self._get_max_video_frames(seq_len -
+                                                      max_image_tokens)
+        max_frames_per_video = min(
+            max_total_frames // max(max_videos, 1),
+            _MAX_FRAMES_PER_VIDEO,
+        )
+
+        return max(max_frames_per_video, 1)
+
+    def get_max_video_tokens(self, seq_len: int) -> int:
+        target_width, target_height = self.get_image_size_with_most_features()
+
+        return self.get_num_video_tokens(
+            image_width=target_width,
+            image_height=target_height,
+            num_frames=self.get_num_frames_with_most_features(seq_len),
+            image_processor=None,
+        )
+
+
+class KeyeDummyInputsBuilder(BaseDummyInputsBuilder[KeyeProcessingInfo]):
+
+    def get_dummy_text(self, mm_counts: Mapping[str, int]) -> str:
+        num_images = mm_counts.get("image", 0)
+        num_videos = mm_counts.get("video", 0)
+
+        hf_processor = self.info.get_hf_processor()
+        image_token: str = hf_processor.image_token
+        video_token: str = hf_processor.video_token
+
+        return image_token * num_images + video_token * num_videos
+
+    def get_dummy_mm_data(
+        self,
+        seq_len: int,
+        mm_counts: Mapping[str, int],
+    ) -> MultiModalDataDict:
+        num_images = mm_counts.get("image", 0)
+        num_videos = mm_counts.get("video", 0)
+
+        target_width, target_height = (
+            self.info.get_image_size_with_most_features())
+        target_num_frames = self.info.get_num_frames_with_most_features(
+            seq_len)
+
+        mm_data = {
+            "image":
+            self._get_dummy_images(
+                width=target_width,
+                height=target_height,
+                num_images=num_images,
+            ),
+            "video":
+            self._get_dummy_videos(
+                width=target_width,
+                height=target_height,
+                num_frames=target_num_frames,
+                num_videos=num_videos,
+            ),
+        }
+
+        return mm_data
+
+
+class KeyeMultiModalProcessor(BaseMultiModalProcessor[KeyeProcessingInfo]):
+
+    def _get_data_parser(self) -> MultiModalDataParser:
+        return KeyeMultiModalDataParser()
+
+    def _call_hf_processor(
+        self,
+        prompt: str,
+        mm_data: Mapping[str, object],
+        mm_kwargs: Mapping[str, object],
+    ) -> BatchFeature:
+        return self.info.ctx.call_hf_processor(
+            self.info.get_hf_processor(**mm_kwargs),
+            dict(text=prompt, **mm_data),
+            self.info._get_image_processor_kwargs(**mm_kwargs),
+        )
+
+    def _get_prompt_updates(
+        self,
+        mm_items: MultiModalDataItems,
+        hf_processor_mm_kwargs: Mapping[str, Any],
+        out_mm_kwargs: MultiModalKwargs,
+    ) -> Sequence[PromptUpdate]:
+        hf_processor = self.info.get_hf_processor(**hf_processor_mm_kwargs)
+        image_processor = self.info.get_image_processor(
+            **hf_processor_mm_kwargs)
+        tokenizer = self.info.get_tokenizer()
+        vocab = tokenizer.get_vocab()
+
+        placeholder = {
+            "image": vocab[hf_processor.image_token],
+            "video": vocab[hf_processor.video_token],
+        }
+
+        merge_length = image_processor.merge_size**2
+
+        def get_replacement_keye(item_idx: int, modality: str):
+            grid_thw = out_mm_kwargs[f"{modality}_grid_thw"][item_idx]
+            assert isinstance(grid_thw, torch.Tensor)
+
+            num_tokens = int(grid_thw.prod()) // merge_length
+            return [placeholder[modality]] * num_tokens
+
+        return [
+            PromptReplacement(
+                modality=modality,
+                target=[placeholder[modality]],
+                replacement=partial(get_replacement_keye, modality=modality),
+            ) for modality in ("image", "video")
+        ]
+
+    def _get_mm_fields_config(
+        self,
+        hf_inputs: BatchFeature,
+        hf_processor_mm_kwargs: Mapping[str, object],
+    ) -> Mapping[str, MultiModalFieldConfig]:
+        return _keye_field_config(hf_inputs)
+
+
+@MULTIMODAL_REGISTRY.register_processor(
+    KeyeMultiModalProcessor,
+    info=KeyeProcessingInfo,
+    dummy_inputs=KeyeDummyInputsBuilder,
+)
+class KeyeForConditionalGeneration(nn.Module, SupportsMultiModal, SupportsLoRA,
+                                   SupportsPP):
+    packed_modules_mapping = {
+        "qkv_proj": [
+            "q_proj",
+            "k_proj",
+            "v_proj",
+        ],
+        "gate_up_proj": [
+            "gate_proj",
+            "up_proj",
+        ],
+    }
+
+    hf_to_vllm_mapper = WeightsMapper(orig_to_new_prefix={
+        "lm_head.": "language_model.lm_head.",
+        "model.": "language_model.model.",
+    })
+
+    def __init__(self, *, vllm_config: VllmConfig, prefix: str = ""):
+        super().__init__()
+        config: PretrainedConfig = vllm_config.model_config.hf_config
+        quant_config = vllm_config.quant_config
+        multimodal_config = vllm_config.model_config.multimodal_config
+
+        self.config = config
+        self.multimodal_config = multimodal_config
+
+        self.visual = KeyeSiglipVisionModel(
+            config.vision_config,
+            quant_config=self._maybe_ignore_quant_config(quant_config),
+            prefix=maybe_prefix(prefix, "visual"),
+        )
+        self.mlp_AR = Projector(
+            config,
+            config.vision_config,
+            quant_config=self._maybe_ignore_quant_config(quant_config),
+            prefix=maybe_prefix(prefix, "mlp_AR"),
+        )
+
+        self.language_model = init_vllm_registered_model(
+            vllm_config=vllm_config,
+            prefix=maybe_prefix(prefix, "language_model"),
+            architectures=["Qwen3ForCausalLM"],
+        )
+
+        self.make_empty_intermediate_tensors = (
+            self.language_model.make_empty_intermediate_tensors)
+
+    def _maybe_ignore_quant_config(self, quant_config: QuantizationConfig):
+        if isinstance(quant_config, (GPTQConfig, GPTQMarlinConfig)):
+            return None
+        return quant_config
+
+    def _validate_and_reshape_mm_tensor(self, mm_input: object,
+                                        name: str) -> torch.Tensor:
+        if not isinstance(mm_input, (torch.Tensor, list)):
+            raise ValueError(f"Incorrect type of {name}. "
+                             f"Got type: {type(mm_input)}")
+        if isinstance(mm_input, torch.Tensor):
+            if mm_input.ndim == 2:
+                return mm_input
+            if mm_input.ndim == 5:
+                return mm_input
+            if mm_input.ndim != 3:
+                raise ValueError(f"{name} should be 2D or batched 3D tensor. "
+                                 f"Got ndim: {mm_input.ndim} "
+                                 f"(shape={mm_input.shape})")
+            return torch.concat(list(mm_input))
+        else:
+            return torch.concat(mm_input)
+
+    def _parse_and_validate_image_input(
+            self, **kwargs: object) -> Optional[KeyeImageInputs]:
+        pixel_values = kwargs.pop("pixel_values", None)
+        image_embeds = kwargs.pop("image_embeds", None)
+        image_grid_thw = kwargs.pop("image_grid_thw", None)
+
+        if pixel_values is None and image_embeds is None:
+            return None
+
+        if pixel_values is not None:
+            pixel_values = self._validate_and_reshape_mm_tensor(
+                pixel_values, "image pixel values")
+            image_grid_thw = self._validate_and_reshape_mm_tensor(
+                image_grid_thw, "image grid_thw")
+
+            if not isinstance(pixel_values, (torch.Tensor, list)):
+                raise ValueError("Incorrect type of image pixel values. "
+                                 f"Got type: {type(pixel_values)}")
+
+            return KeyeImagePixelInputs(
+                type="pixel_values",
+                pixel_values=pixel_values,
+                image_grid_thw=image_grid_thw,
+            )
+
+        if image_embeds is not None:
+            image_embeds = self._validate_and_reshape_mm_tensor(
+                image_embeds, "image embeds")
+            image_grid_thw = self._validate_and_reshape_mm_tensor(
+                image_grid_thw, "image grid_thw")
+
+            if not isinstance(image_embeds, torch.Tensor):
+                raise ValueError("Incorrect type of image embeddings. "
+                                 f"Got type: {type(image_embeds)}")
+            return KeyeImageEmbeddingInputs(
+                type="image_embeds",
+                image_embeds=image_embeds,
+                image_grid_thw=image_grid_thw,
+            )
+
+    def _parse_and_validate_video_input(
+            self, **kwargs: object) -> Optional[KeyeVideoInputs]:
+        pixel_values_videos = kwargs.pop("pixel_values_videos", None)
+        video_embeds = kwargs.pop("video_embeds", None)
+        video_grid_thw = kwargs.pop("video_grid_thw", None)
+
+        if pixel_values_videos is None and video_embeds is None:
+            return None
+
+        if pixel_values_videos is not None:
+            pixel_values_videos = self._validate_and_reshape_mm_tensor(
+                pixel_values_videos,
+                "video pixel values",
+            )
+            video_grid_thw = self._validate_and_reshape_mm_tensor(
+                video_grid_thw, "video grid_thw")
+
+            return KeyeVideoPixelInputs(
+                type="pixel_values_videos",
+                pixel_values_videos=pixel_values_videos,
+                video_grid_thw=video_grid_thw,
+            )
+
+        if video_embeds is not None:
+            video_embeds = self._validate_and_reshape_mm_tensor(
+                video_embeds, "video embeds")
+            video_grid_thw = self._validate_and_reshape_mm_tensor(
+                video_grid_thw, "video grid_thw")
+
+            if not isinstance(video_embeds, torch.Tensor):
+                raise ValueError("Incorrect type of video embeddings. "
+                                 f"Got type: {type(video_embeds)}")
+            return KeyeVideoEmbeddingInputs(
+                type="video_embeds",
+                video_embeds=video_embeds,
+                video_grid_thw=video_grid_thw,
+            )
+
+    def _process_image_input(
+            self, image_input: KeyeImageInputs) -> tuple[torch.Tensor, ...]:
+        siglip_position_ids = list()
+        image_grid_hws = list()
+        sample_indices = list()
+        cu_seqlens = [0]
+
+        image_grid_thw = image_input["image_grid_thw"]
+        assert image_grid_thw.ndim == 2
+
+        for idx, thaw in enumerate(image_grid_thw):
+            thw_tuple = tuple(thaw.detach().cpu().numpy().tolist())
+            numel = np.prod(thw_tuple)
+            image_grid_hws.append(thw_tuple)
+            image_position_ids = torch.arange(numel) % np.prod(thw_tuple[1:])
+            siglip_position_ids.append(image_position_ids)
+            sample_indices.append(torch.full((numel, ), idx,
+                                             dtype=torch.int64))
+            cu_seqlens.append(cu_seqlens[-1] + numel)
+
+        if image_input["type"] == "image_embeds":
+            raise ValueError(
+                "Image embeddings are not supported for this processing path.")
+        else:
+            pixel_values = image_input["pixel_values"].type(self.visual.dtype)
+            siglip_position_ids = torch.concat(siglip_position_ids,
+                                               dim=0).to(pixel_values.device)
+            cu_seqlens = torch.tensor(cu_seqlens, dtype=torch.int32).to(
+                pixel_values.device)
+            sample_indices = torch.concat(sample_indices,
+                                          dim=0).to(pixel_values.device)
+
+            image_embeds = self.visual(
+                pixel_values=pixel_values,
+                image_grid_thw=image_grid_hws,
+                position_ids=siglip_position_ids,
+                vision_return_embed_list=False,
+                interpolate_pos_encoding=True,
+                sample_indices=sample_indices,
+                cu_seqlens=cu_seqlens,
+                use_rope=True,
+                window_size=-1,
+            )
+            image_embeds = tuple(self.mlp_AR(image_embeds, image_grid_thw))
+            return image_embeds
+
+    def _process_video_input(
+            self, video_input: KeyeVideoInputs) -> tuple[torch.Tensor, ...]:
+        siglip_position_ids = list()
+        video_grid_hws = list()
+        sample_indices = list()
+        cu_seqlens = [0]
+
+        video_grid_thw = video_input["video_grid_thw"]
+        assert video_grid_thw.ndim == 2
+
+        for idx, thaw in enumerate(video_grid_thw):
+            thw_tuple = tuple(thaw.detach().cpu().numpy().tolist())
+            numel = np.prod(thw_tuple)
+
+            video_grid_hws.append(thw_tuple)
+            video_position_ids = torch.arange(numel) % np.prod(thw_tuple[1:])
+            siglip_position_ids.append(video_position_ids)
+            sample_indices.append(torch.full((numel, ), idx,
+                                             dtype=torch.int64))
+            cu_seqlens.append(cu_seqlens[-1] + numel)
+
+        if video_input["type"] == "video_embeds":
+            raise ValueError(
+                "Video embeddings are not supported for this processing path.")
+        else:
+            pixel_values_videos = video_input["pixel_values_videos"].type(
+                self.visual.dtype)
+            siglip_position_ids = torch.concat(siglip_position_ids, dim=0).to(
+                pixel_values_videos.device)
+            cu_seqlens = torch.tensor(cu_seqlens, dtype=torch.int32).to(
+                pixel_values_videos.device)
+            sample_indices = torch.concat(sample_indices,
+                                          dim=0).to(pixel_values_videos.device)
+
+            video_embeds = self.visual(
+                pixel_values=pixel_values_videos,
+                image_grid_thw=video_grid_hws,
+                position_ids=siglip_position_ids,
+                vision_return_embed_list=True,
+                interpolate_pos_encoding=True,
+                sample_indices=sample_indices,
+                cu_seqlens=cu_seqlens,
+                use_rope=True,
+                window_size=-1,
+            )
+            video_embeds = tuple(self.mlp_AR(video_embeds, video_grid_thw))
+            return video_embeds
+
+    def _parse_and_validate_multimodal_inputs(self, **kwargs: object) -> dict:
+        modalities = {}
+
+        for input_key in kwargs:
+            if (input_key in ("pixel_values", "image_embeds")
+                    and "images" not in modalities):
+                modalities["images"] = self._parse_and_validate_image_input(
+                    **kwargs)
+            if (input_key in ("pixel_values_videos", "video_embeds")
+                    and "videos" not in modalities):
+                modalities["videos"] = self._parse_and_validate_video_input(
+                    **kwargs)
+
+        return modalities
+
+    def get_multimodal_embeddings(
+            self, **kwargs: object) -> Optional[MultiModalEmbeddings]:
+
+        modalities = self._parse_and_validate_multimodal_inputs(**kwargs)
+        if not modalities:
+            return None
+
+        multimodal_embeddings: tuple[torch.Tensor, ...] = ()
+
+        for modality in modalities:
+            if modality == "images":
+                image_input = modalities["images"]
+                vision_embeddings = self._process_image_input(image_input)
+                multimodal_embeddings += vision_embeddings
+            if modality == "videos":
+                video_input = modalities["videos"]
+                video_embeddings = self._process_video_input(video_input)
+                multimodal_embeddings += video_embeddings
+        return multimodal_embeddings
+
+    def get_input_embeddings(
+        self,
+        input_ids: torch.Tensor,
+        multimodal_embeddings: Optional[MultiModalEmbeddings] = None,
+    ) -> torch.Tensor:
+        inputs_embeds = self.language_model.get_input_embeddings(input_ids)
+        if multimodal_embeddings is not None:
+            inputs_embeds = merge_multimodal_embeddings(
+                input_ids,
+                inputs_embeds,
+                multimodal_embeddings,
+                [
+                    self.config.image_token_id,
+                    self.config.video_token_id,
+                ],
+            )
+        return inputs_embeds
+
+    def get_input_embeddings_v0(
+        self,
+        input_ids: torch.Tensor,
+        image_input: Optional[KeyeImagePixelInputs] = None,
+        video_input: Optional[KeyeVideoPixelInputs] = None,
+    ) -> torch.Tensor:
+        inputs_embeds = self.get_input_embeddings(input_ids)
+        if image_input is not None:
+            image_embeds = self._process_image_input(image_input)
+            inputs_embeds = merge_multimodal_embeddings(
+                input_ids,
+                inputs_embeds,
+                image_embeds,
+                placeholder_token_id=self.config.image_token_id,
+            )
+
+        if video_input is not None:
+            video_embeds = self._process_video_input(video_input)
+            inputs_embeds = merge_multimodal_embeddings(
+                input_ids,
+                inputs_embeds,
+                video_embeds,
+                placeholder_token_id=self.config.video_token_id,
+            )
+        return inputs_embeds
+
+    def forward(
+        self,
+        input_ids: torch.Tensor,
+        positions: torch.Tensor,
+        intermediate_tensors: Optional[IntermediateTensors] = None,
+        inputs_embeds: Optional[torch.Tensor] = None,
+        **kwargs: object,
+    ) -> Union[torch.Tensor, IntermediateTensors]:
+        """Run forward pass for Qwen2-VL.
+
+        Args:
+            input_ids: Flattened (concatenated) input_ids corresponding to a
+                batch.
+            positions: Flattened (concatenated) position ids corresponding to a
+                batch.
+                **NOTE**: If mrope is enabled (default setting for Qwen2-VL
+                opensource models), the shape will be `(3, seq_len)`,
+                otherwise it will be `(seq_len,).
+            pixel_values: Pixel values to be fed to a model.
+                `None` if no images are passed.
+            image_grid_thw: Tensor `(n_images, 3)` of image 3D grid in LLM.
+                `None` if no images are passed.
+            pixel_values_videos: Pixel values of videos to be fed to a model.
+                `None` if no videos are passed.
+            video_grid_thw: Tensor `(n_videos, 3)` of video 3D grid in LLM.
+                `None` if no videos are passed.
+        """
+
+        if intermediate_tensors is not None:
+            inputs_embeds = None
+
+        elif inputs_embeds is None:
+            image_input = self._parse_and_validate_image_input(**kwargs)
+            video_input = self._parse_and_validate_video_input(**kwargs)
+
+            if image_input is None and video_input is None:
+                inputs_embeds = None
+            else:
+                if uses_mrope(self.config):
+                    assert positions.ndim == 2 and positions.size(0) == 3, (
+                        "multimodal section rotary embedding requires "
+                        f"(3, seq_len) positions, but got {positions.size()}")
+                inputs_embeds = self.get_input_embeddings_v0(
+                    input_ids,
+                    image_input=image_input,
+                    video_input=video_input,
+                )
+                input_ids = None
+
+        hidden_states = self.language_model.model(
+            input_ids=input_ids,
+            positions=positions,
+            intermediate_tensors=intermediate_tensors,
+            inputs_embeds=inputs_embeds,
+        )
+        return hidden_states
+
+    def compute_logits(
+        self,
+        hidden_states: torch.Tensor,
+        sampling_metadata: SamplingMetadata,
+    ) -> Optional[torch.Tensor]:
+        return self.language_model.compute_logits(hidden_states,
+                                                  sampling_metadata)
+
+    def load_weights(self, weights: Iterable[tuple[str,
+                                                   torch.Tensor]]) -> set[str]:
+
+        loader = AutoWeightsLoader(self)
+        return loader.load_weights(weights, mapper=self.hf_to_vllm_mapper)
+
+    def get_mm_mapping(self) -> MultiModelKeys:
+        """Get the module prefix in multimodal models."""
+        return MultiModelKeys.from_string_field(
+            language_model="language_model",
+            connector="visual.",
+            tower_model="mlp_AR.",
+        )
diff --git a/vllm/model_executor/models/registry.py b/vllm/model_executor/models/registry.py
index 65a16766723..637ac45625e 100644
--- a/vllm/model_executor/models/registry.py
+++ b/vllm/model_executor/models/registry.py
@@ -196,6 +196,7 @@
     "InternVLChatModel": ("internvl", "InternVLChatModel"),
     "Idefics3ForConditionalGeneration":("idefics3","Idefics3ForConditionalGeneration"),
     "SmolVLMForConditionalGeneration": ("smolvlm","SmolVLMForConditionalGeneration"),  # noqa: E501
+    "KeyeForConditionalGeneration": ("keye", "KeyeForConditionalGeneration"),
     "KimiVLForConditionalGeneration": ("kimi_vl", "KimiVLForConditionalGeneration"),  # noqa: E501
     "LlavaForConditionalGeneration": ("llava", "LlavaForConditionalGeneration"),
     "LlavaNextForConditionalGeneration": ("llava_next", "LlavaNextForConditionalGeneration"),  # noqa: E501