diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index fc8c90ad773..408979bfbae 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -20716,6 +20716,43 @@
         "supports_tool_choice": true,
         "supports_vision": true
     },
+    "gpt-5.3": {
+        "cache_read_input_token_cost": 1.75e-07,
+        "cache_read_input_token_cost_priority": 3.5e-07,
+        "input_cost_per_token": 1.75e-06,
+        "input_cost_per_token_priority": 3.5e-06,
+        "litellm_provider": "openai",
+        "max_input_tokens": 128000,
+        "max_output_tokens": 16384,
+        "max_tokens": 16384,
+        "mode": "chat",
+        "output_cost_per_token": 1.4e-05,
+        "output_cost_per_token_priority": 2.8e-05,
+        "supported_endpoints": [
+            "/v1/chat/completions",
+            "/v1/responses"
+        ],
+        "supported_modalities": [
+            "text",
+            "image"
+        ],
+        "supported_output_modalities": [
+            "text"
+        ],
+        "supports_function_calling": true,
+        "supports_native_streaming": true,
+        "supports_parallel_function_calling": true,
+        "supports_pdf_input": true,
+        "supports_prompt_caching": true,
+        "supports_reasoning": true,
+        "supports_response_schema": true,
+        "supports_system_messages": true,
+        "supports_tool_choice": true,
+        "supports_vision": true,
+        "supports_web_search": true,
+        "supports_none_reasoning_effort": false,
+        "supports_xhigh_reasoning_effort": false
+    },
     "gpt-5.3-chat-latest": {
         "cache_read_input_token_cost": 1.75e-07,
         "cache_read_input_token_cost_priority": 3.5e-07,