From ea610af201ba0c00bc1c2a27f0580f0e33fb362e Mon Sep 17 00:00:00 2001
From: Lucas Gomide <lucaslg200@gmail.com>
Date: Fri, 10 Apr 2026 10:32:21 -0300
Subject: [PATCH] feat: propagate is_litellm flag through LLMCallCompletedEvent

Add is_litellm field to LLMCallCompletedEvent so downstream consumers
---
 .../src/crewai/events/types/llm_events.py     |  1 +
 lib/crewai/src/crewai/llm.py                  |  1 +
 lib/crewai/src/crewai/llms/base_llm.py        |  1 +
 .../tests/events/test_llm_usage_event.py      | 21 +++++++++++++++++++
 4 files changed, 24 insertions(+)

diff --git a/lib/crewai/src/crewai/events/types/llm_events.py b/lib/crewai/src/crewai/events/types/llm_events.py
index b138f908c..453048e4f 100644
--- a/lib/crewai/src/crewai/events/types/llm_events.py
+++ b/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):
diff --git a/lib/crewai/src/crewai/llm.py b/lib/crewai/src/crewai/llm.py
index e6f5cc68b..98ca0cd47 100644
--- a/lib/crewai/src/crewai/llm.py
+++ b/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,
             ),
         )
 
diff --git a/lib/crewai/src/crewai/llms/base_llm.py b/lib/crewai/src/crewai/llms/base_llm.py
index 4f45572ee..26d486305 100644
--- a/lib/crewai/src/crewai/llms/base_llm.py
+++ b/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,
             ),
         )
 
diff --git a/lib/crewai/tests/events/test_llm_usage_event.py b/lib/crewai/tests/events/test_llm_usage_event.py
index 9be8c639f..2ef3367b7 100644
--- a/lib/crewai/tests/events/test_llm_usage_event.py
+++ b/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