diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index 9e9f61507c2..d2dabe0b446 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -28317,6 +28317,34 @@
         "supports_response_schema": true,
         "supports_vision": true
     },
+    "github_copilot/gpt-5.4-mini": {
+        "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/gpt-5.5": {
+        "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/mai-code-1-flash": {
         "cache_read_input_token_cost": 7.5e-08,
         "input_cost_per_token": 7.5e-07,