From c9abde697902dc83e86472ef484a454581a59615 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rapha=C3=ABl=20MANSUY?= <raphael.mansuy@gmail.com>
Date: Thu, 4 Dec 2025 19:19:00 +0800
Subject: [PATCH] cherry-pick 9495778c

---
 lightrag/llm/openai.py | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/lightrag/llm/openai.py b/lightrag/llm/openai.py
index d367abc7..704edc8c 100644
--- a/lightrag/llm/openai.py
+++ b/lightrag/llm/openai.py
@@ -27,6 +27,19 @@ from lightrag.utils import (
     safe_unicode_decode,
     logger,
 )
+
+# Try to import Langfuse for LLM observability (optional)
+# Falls back to standard OpenAI client if not available
+try:
+    from langfuse.openai import AsyncOpenAI
+
+    LANGFUSE_ENABLED = True
+    logger.info("Langfuse observability enabled for OpenAI client")
+except ImportError:
+    from openai import AsyncOpenAI
+
+    LANGFUSE_ENABLED = False
+    logger.debug("Langfuse not available, using standard OpenAI client")
 from lightrag.types import GPTKeywordExtractionFormat
 from lightrag.api import __api_version__