gitcommit90
diff --git a/‎sentry_sdk/integrations/langchain.py‎
Lines changed: 15 additions & 10 deletions b/‎sentry_sdk/integrations/langchain.py‎
Lines changed: 15 additions & 10 deletions
diff --git a/‎tests/integrations/langchain/test_langchain.py‎
Lines changed: 92 additions & 0 deletions b/‎tests/integrations/langchain/test_langchain.py‎
Lines changed: 92 additions & 0 deletions
@@ -108,6 +108,15 @@
     OllamaEmbeddings = None
 
 
+def _get_ai_system(all_params: "Dict[str, Any]") -> "Optional[str]":
+    ai_type = all_params.get("_type")
+
+    if not ai_type or not isinstance(ai_type, str):
+        return None
+
+    return ai_type
+
+
 DATA_FIELDS = {
     "frequency_penalty": SPANDATA.GEN_AI_REQUEST_FREQUENCY_PENALTY,
     "function_call": SPANDATA.GEN_AI_RESPONSE_TOOL_CALLS,
@@ -380,11 +389,9 @@ def on_llm_start(
                     model,
                 )
 
-            ai_type = all_params.get("_type", "")
-            if "anthropic" in ai_type:
-                span.set_data(SPANDATA.GEN_AI_SYSTEM, "anthropic")
-            elif "openai" in ai_type:
-                span.set_data(SPANDATA.GEN_AI_SYSTEM, "openai")
+            ai_system = _get_ai_system(all_params)
+            if ai_system:
+                span.set_data(SPANDATA.GEN_AI_SYSTEM, ai_system)
 
             for key, attribute in DATA_FIELDS.items():
                 if key in all_params and all_params[key] is not None:
@@ -448,11 +455,9 @@ def on_chat_model_start(
             if model:
                 span.set_data(SPANDATA.GEN_AI_REQUEST_MODEL, model)
 
-            ai_type = all_params.get("_type", "")
-            if "anthropic" in ai_type:
-                span.set_data(SPANDATA.GEN_AI_SYSTEM, "anthropic")
-            elif "openai" in ai_type:
-                span.set_data(SPANDATA.GEN_AI_SYSTEM, "openai")
+            ai_system = _get_ai_system(all_params)
+            if ai_system:
+                span.set_data(SPANDATA.GEN_AI_SYSTEM, ai_system)
 
             agent_name = _get_current_agent()
             if agent_name:
 
@@ -159,6 +159,7 @@ def test_langchain_text_completion(
 
     llm_span = llm_spans[0]
     assert llm_span["description"] == "generate_text gpt-3.5-turbo"
+    assert llm_span["data"]["gen_ai.system"] == "openai"
     assert llm_span["data"]["gen_ai.request.model"] == "gpt-3.5-turbo"
     assert llm_span["data"]["gen_ai.response.text"] == "The capital of France is Paris."
     assert llm_span["data"]["gen_ai.usage.total_tokens"] == 25
@@ -254,6 +255,7 @@ def test_langchain_create_agent(
     assert len(chat_spans) == 1
     assert chat_spans[0]["origin"] == "auto.ai.langchain"
 
+    assert chat_spans[0]["data"]["gen_ai.system"] == "openai-chat"
     assert chat_spans[0]["data"]["gen_ai.usage.input_tokens"] == 10
     assert chat_spans[0]["data"]["gen_ai.usage.output_tokens"] == 20
     assert chat_spans[0]["data"]["gen_ai.usage.total_tokens"] == 30
@@ -413,10 +415,12 @@ def test_tool_execution_span(
     assert chat_spans[0]["data"]["gen_ai.usage.input_tokens"] == 142
     assert chat_spans[0]["data"]["gen_ai.usage.output_tokens"] == 50
     assert chat_spans[0]["data"]["gen_ai.usage.total_tokens"] == 192
+    assert chat_spans[0]["data"]["gen_ai.system"] == "openai-chat"
 
     assert chat_spans[1]["data"]["gen_ai.usage.input_tokens"] == 89
     assert chat_spans[1]["data"]["gen_ai.usage.output_tokens"] == 28
     assert chat_spans[1]["data"]["gen_ai.usage.total_tokens"] == 117
+    assert chat_spans[1]["data"]["gen_ai.system"] == "openai-chat"
 
     if send_default_pii and include_prompts:
         assert "word" in tool_exec_span["data"][SPANDATA.GEN_AI_TOOL_INPUT]
@@ -2226,6 +2230,94 @@ def test_transform_google_file_data(self):
         }
 
 
+@pytest.mark.parametrize(
+    "ai_type,expected_system",
+    [
+        # Real LangChain _type values (from _llm_type properties)
+        # OpenAI
+        ("openai-chat", "openai-chat"),
+        ("openai", "openai"),
+        # Azure OpenAI
+        ("azure-openai-chat", "azure-openai-chat"),
+        ("azure", "azure"),
+        # Anthropic
+        ("anthropic-chat", "anthropic-chat"),
+        # Google
+        ("vertexai", "vertexai"),
+        ("chat-google-generative-ai", "chat-google-generative-ai"),
+        ("google_gemini", "google_gemini"),
+        # AWS Bedrock
+        ("amazon_bedrock_chat", "amazon_bedrock_chat"),
+        ("amazon_bedrock", "amazon_bedrock"),
+        # Cohere
+        ("cohere-chat", "cohere-chat"),
+        # Ollama
+        ("chat-ollama", "chat-ollama"),
+        ("ollama-llm", "ollama-llm"),
+        # Mistral
+        ("mistralai-chat", "mistralai-chat"),
+        # Fireworks
+        ("fireworks-chat", "fireworks-chat"),
+        ("fireworks", "fireworks"),
+        # HuggingFace
+        ("huggingface-chat-wrapper", "huggingface-chat-wrapper"),
+        # Groq
+        ("groq-chat", "groq-chat"),
+        # NVIDIA
+        ("chat-nvidia-ai-playground", "chat-nvidia-ai-playground"),
+        # xAI
+        ("xai-chat", "xai-chat"),
+        # DeepSeek
+        ("chat-deepseek", "chat-deepseek"),
+        # Edge cases
+        ("", None),
+        (None, None),
+    ],
+)
+def test_langchain_ai_system_detection(
+    sentry_init, capture_events, ai_type, expected_system
+):
+    sentry_init(
+        integrations=[LangchainIntegration()],
+        traces_sample_rate=1.0,
+    )
+    events = capture_events()
+
+    callback = SentryLangchainCallback(max_span_map_size=100, include_prompts=True)
+
+    run_id = "test-ai-system-uuid"
+    serialized = {"_type": ai_type} if ai_type is not None else {}
+    prompts = ["Test prompt"]
+
+    with start_transaction():
+        callback.on_llm_start(
+            serialized=serialized,
+            prompts=prompts,
+            run_id=run_id,
+            invocation_params={"_type": ai_type, "model": "test-model"},
+        )
+
+        generation = Mock(text="Test response", message=None)
+        response = Mock(generations=[[generation]])
+        callback.on_llm_end(response=response, run_id=run_id)
+
+    assert len(events) > 0
+    tx = events[0]
+    assert tx["type"] == "transaction"
+
+    llm_spans = [
+        span for span in tx.get("spans", []) if span.get("op") == "gen_ai.generate_text"
+    ]
+    assert len(llm_spans) > 0
+
+    llm_span = llm_spans[0]
+
+    if expected_system is not None:
+        assert llm_span["data"][SPANDATA.GEN_AI_SYSTEM] == expected_system
+    else:
+        assert SPANDATA.GEN_AI_SYSTEM not in llm_span.get("data", {})
+
+
 class TestTransformLangchainMessageContent:
     """Tests for _transform_langchain_message_content function."""