feat: propagate is_litellm flag through LLMCallCompletedEvent

Add is_litellm field to LLMCallCompletedEvent so downstream consumers

lib/crewai/src/crewai/events/types/llm_events.py

@@ -58,6 +58,7 @@ class LLMCallCompletedEvent(LLMEventBase):
     response: Any
     call_type: LLMCallType
     usage: dict[str, Any] | None = None
+    is_litellm: bool = False
 
 
 class LLMCallFailedEvent(LLMEventBase):

lib/crewai/src/crewai/llm.py

@@ -1957,6 +1957,7 @@ class LLM(BaseLLM):
                 model=self.model,
                 call_id=get_current_call_id(),
                 usage=usage,
+                is_litellm=self.is_litellm,
             ),
         )
 

lib/crewai/src/crewai/llms/base_llm.py

@@ -479,6 +479,7 @@ class BaseLLM(BaseModel, ABC):
                 model=self.model,
                 call_id=get_current_call_id(),
                 usage=usage,
+                is_litellm=self.is_litellm,
             ),
         )
 

lib/crewai/tests/events/test_llm_usage_event.py

@@ -175,6 +175,27 @@ class TestEmitCallCompletedEventPassesUsage:
         assert isinstance(event, LLMCallCompletedEvent)
         assert event.usage is None
 
+    def test_is_litellm_is_passed_to_event(self, mock_emit, llm):
+        llm.is_litellm = True
+        llm._emit_call_completed_event(
+            response="hello",
+            call_type=LLMCallType.LLM_CALL,
+            messages="test prompt",
+        )
+
+        event = mock_emit.call_args[1]["event"]
+        assert event.is_litellm is True
+
+    def test_is_litellm_defaults_to_false(self, mock_emit, llm):
+        llm._emit_call_completed_event(
+            response="hello",
+            call_type=LLMCallType.LLM_CALL,
+            messages="test prompt",
+        )
+
+        event = mock_emit.call_args[1]["event"]
+        assert event.is_litellm is False
+
 class TestUsageMetricsNewFields:
     def test_add_usage_metrics_aggregates_reasoning_and_cache_creation(self):
         from crewai.types.usage_metrics import UsageMetrics