diff --git a/litellm/litellm_core_utils/core_helpers.py b/litellm/litellm_core_utils/core_helpers.py
index 39e95fbf687..2f400d5975d 100644
--- a/litellm/litellm_core_utils/core_helpers.py
+++ b/litellm/litellm_core_utils/core_helpers.py
@@ -199,6 +199,7 @@ _FINISH_REASON_MAP: Final[dict[str, OpenAIChatCompletionFinishReason]] = {
     "stop_sequence": "stop",
     "end_turn": "stop",
     "max_tokens": "length",
+    "model_context_window_exceeded": "length",
     "tool_use": "tool_calls",
     "refusal": "content_filter",
     "compaction": "length",
diff --git a/tests/unit/litellm_core_utils/test_core_helpers.py b/tests/unit/litellm_core_utils/test_core_helpers.py
index 2a6dd347d5f..ed8a090f064 100644
--- a/tests/unit/litellm_core_utils/test_core_helpers.py
+++ b/tests/unit/litellm_core_utils/test_core_helpers.py
@@ -178,6 +178,7 @@ class TestMapFinishReasonAnthropic:
             ("stop_sequence", "stop"),
             ("end_turn", "stop"),
             ("max_tokens", "length"),
+            ("model_context_window_exceeded", "length"),
             ("tool_use", "tool_calls"),
             ("compaction", "length"),
             ("content_filtered", "content_filter"),