diff --git a/src/AzureOpenAIProxy.ApiApp/Models/CreateChatCompletionRequest.cs b/src/AzureOpenAIProxy.ApiApp/Models/CreateChatCompletionRequest.cs
new file mode 100644
index 00000000..a7369add
--- /dev/null
+++ b/src/AzureOpenAIProxy.ApiApp/Models/CreateChatCompletionRequest.cs
@@ -0,0 +1,38 @@
+using System.ComponentModel.DataAnnotations;
+using System.Text.Json.Serialization;
+using System.Text.Json;
+
+namespace AzureOpenAIProxy.ApiApp.Models
+{
+    public class CreateChatCompletionRequest
+    {
+        [JsonPropertyName("messages"), Required]
+        public List<ChatCompletionRequestMessage>? Messages { get; set; }
+
+    }
+
+    public class ChatCompletionRequestMessage
+    {
+        [JsonPropertyName("role"), Required]
+        public ChatCompletionRequestMessageRole? Role { get; set; }
+
+        [JsonPropertyName("content")]
+        public string? Content { get; set; }
+    }
+
+    [JsonConverter(typeof(JsonStringEnumConverter))]
+    public enum ChatCompletionRequestMessageRole
+    {
+        [JsonPropertyName("system")]
+        System,
+
+        [JsonPropertyName("user")]
+        User,
+
+        [JsonPropertyName("assistant")]
+        Assistant,
+
+        [JsonPropertyName("tool")]
+        Tool,
+    }
+}
diff --git a/test/AzureOpenAIProxy.ApiApp.Tests/Models/CreateChatCompletionRequestTests.cs b/test/AzureOpenAIProxy.ApiApp.Tests/Models/CreateChatCompletionRequestTests.cs
new file mode 100644
index 00000000..8cd50f88
--- /dev/null
+++ b/test/AzureOpenAIProxy.ApiApp.Tests/Models/CreateChatCompletionRequestTests.cs
@@ -0,0 +1,47 @@
+using AzureOpenAIProxy.ApiApp.Models;
+
+
+
+using System.Text.Json;
+
+
+namespace AzureOpenAIProxy.ApiApp.Tests.Models
+{
+    public class CreateChatCompletionRequestTests
+    {
+        [Fact]
+        public void Given_ChatCompletionsJson_When_Deserialized_Then_ShouldReturnCreateChatCompletionRequest()
+        {
+            // Arrange
+            var json = @"
+            {
+                ""messages"": [
+                    {
+                        ""role"": ""system"",
+                        ""content"": ""you are a helpful assistant that talks like a pirate""
+                    },
+                    {
+                        ""role"": ""user"",
+                        ""content"": ""can you tell me how to care for a parrot?""
+                    }
+                ]
+            }";
+
+            // Act
+            var result = JsonSerializer.Deserialize<CreateChatCompletionRequest>(json);
+
+            // Assert
+            Assert.NotNull(result);
+            Assert.NotNull(result.Messages); // Ensure Messages is not null
+            Assert.Equal(2, result.Messages.Count);
+
+            var firstMessage = result.Messages[0];
+            Assert.Equal(ChatCompletionRequestMessageRole.System, firstMessage.Role);
+            Assert.Equal("you are a helpful assistant that talks like a pirate", firstMessage.Content);
+
+            var secondMessage = result.Messages[1];
+            Assert.Equal(ChatCompletionRequestMessageRole.User, secondMessage.Role);
+            Assert.Equal("can you tell me how to care for a parrot?", secondMessage.Content);
+        }
+    }
+}