diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index 88b67b18..34ec5a52 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -5312,6 +5312,40 @@
     "supports_vision": true,
     "supports_web_search": true
   },
+  "gpt-5.3-chat-latest": {
+    "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
+  },
   "gpt-5.3-codex": {
     "cache_read_input_token_cost": 1.75e-07,
     "cache_read_input_token_cost_priority": 3.5e-07,
diff --git a/model_prices_and_context_window.sha256 b/model_prices_and_context_window.sha256
index b8a6f707..57b19045 100644
--- a/model_prices_and_context_window.sha256
+++ b/model_prices_and_context_window.sha256
@@ -1 +1 @@
-ec131162af4e8102974b5d645f0ab84de38537da40f7de23917957be01813ef9
+c0ecc9f0d7f4b5a239d8e20fd643c12d7103c00ae014e06d475d176e31a1644c