diff --git a/litellm/llms/cohere/chat/v2_transformation.py b/litellm/llms/cohere/chat/v2_transformation.py
index b46a995a736..141a174e558 100644
--- a/litellm/llms/cohere/chat/v2_transformation.py
+++ b/litellm/llms/cohere/chat/v2_transformation.py
@@ -250,7 +250,7 @@ class CohereV2ChatConfig(OpenAIGPTConfig):
         completion_tokens: Final = token_usage.get("output_tokens", 0)
 
         model_response.choices[0].finish_reason = map_finish_reason(  # rebind-ok: ModelResponse is filled in place
-            cohere_v2_chat_response["finish_reason"]
+            cohere_v2_chat_response.get("finish_reason", "COMPLETE")
         )
         model_response.created = int(time.time())
         model_response.model = model
diff --git a/tests/unit/llms/cohere/chat/test_cohere_transformation.py b/tests/unit/llms/cohere/chat/test_cohere_transformation.py
index 6b8fd7629dc..fcb3d3f1cc0 100644
--- a/tests/unit/llms/cohere/chat/test_cohere_transformation.py
+++ b/tests/unit/llms/cohere/chat/test_cohere_transformation.py
@@ -607,6 +607,25 @@ def test_cohere_v2_maps_finish_reason(
     assert response.choices[0].finish_reason == expected_finish_reason
 
 
+@pytest.mark.usefixtures("_cohere_httpx_transport")
+@pytest.mark.respx(assert_all_called=True)
+def test_cohere_v2_missing_finish_reason_defaults_to_stop(respx_mock: respx.MockRouter) -> None:
+    body_without_finish_reason: Final = {
+        key: value
+        for key, value in _cohere_v2_response({"content": [{"type": "text", "text": "Hello"}]}).items()
+        if key != "finish_reason"
+    }
+    respx_mock.post(COHERE_V2_CHAT_URL).mock(return_value=httpx.Response(200, json=body_without_finish_reason))
+
+    response: Final = litellm.completion(
+        model="cohere_chat/v2/command-a-03-2025",
+        messages=[{"role": "user", "content": "Say hello"}],
+        api_key="cohere-test-key",
+    )
+
+    assert (response.choices[0].message.content, response.choices[0].finish_reason) == ("Hello", "stop")
+
+
 @pytest.mark.usefixtures("_cohere_httpx_transport")
 @pytest.mark.respx(assert_all_called=True)
 async def test_cohere_v2_annotations(respx_mock: respx.MockRouter) -> None: