diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index 815d29c7964..5479ba29985 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -16433,6 +16433,19 @@
         "supports_parallel_function_calling": true,
         "supports_vision": true
     },
+    "github_copilot/claude-opus-4.6-fast": {
+        "litellm_provider": "github_copilot",
+        "max_input_tokens": 128000,
+        "max_output_tokens": 16000,
+        "max_tokens": 16000,
+        "mode": "chat",
+        "supported_endpoints": [
+            "/v1/chat/completions"
+        ],
+        "supports_function_calling": true,
+        "supports_parallel_function_calling": true,
+        "supports_vision": true
+    },
     "github_copilot/claude-opus-41": {
         "litellm_provider": "github_copilot",
         "max_input_tokens": 80000,
@@ -16684,6 +16697,20 @@
         "supports_response_schema": true,
         "supports_vision": true
     },
+    "github_copilot/gpt-5.3-codex": {
+        "litellm_provider": "github_copilot",
+        "max_input_tokens": 128000,
+        "max_output_tokens": 128000,
+        "max_tokens": 128000,
+        "mode": "responses",
+        "supported_endpoints": [
+            "/v1/responses"
+        ],
+        "supports_function_calling": true,
+        "supports_parallel_function_calling": true,
+        "supports_response_schema": true,
+        "supports_vision": true
+    },
     "github_copilot/text-embedding-3-small": {
         "litellm_provider": "github_copilot",
         "max_input_tokens": 8191,