From ec2903e5ee06079681086fc02da95c8d59ca10f8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jannik=20Maierh=C3=B6fer?=
 <48529566+jannikmaierhoefer@users.noreply.github.com>
Date: Thu, 19 Jun 2025 18:18:33 +0200
Subject: [PATCH] fix: upgrade langfuse code examples to langfuse python sdk v3
 (#3030)

Co-authored-by: Tony Kipkemboi <iamtonykipkemboi@gmail.com>
---
 docs/observability/langfuse.mdx | 33 ++++++++++++++++++++++-----------
 1 file changed, 22 insertions(+), 11 deletions(-)

diff --git a/docs/observability/langfuse.mdx b/docs/observability/langfuse.mdx
index 0202f39ef..1cfed6d9d 100644
--- a/docs/observability/langfuse.mdx
+++ b/docs/observability/langfuse.mdx
@@ -30,18 +30,29 @@ Set your Langfuse API keys and configure OpenTelemetry export settings to send t
 
 ```python
 import os
-import base64
+ 
+# Get keys for your project from the project settings page: https://cloud.langfuse.com
+os.environ["LANGFUSE_PUBLIC_KEY"] = "pk-lf-..." 
+os.environ["LANGFUSE_SECRET_KEY"] = "sk-lf-..."
+os.environ["LANGFUSE_HOST"] = "https://cloud.langfuse.com" # 🇪🇺 EU region
+# os.environ["LANGFUSE_HOST"] = "https://us.cloud.langfuse.com" # 🇺🇸 US region
+ 
+ 
+# Your OpenAI key
+os.environ["OPENAI_API_KEY"] = "sk-proj-..."
+```
+With the environment variables set, we can now initialize the Langfuse client. get_client() initializes the Langfuse client using the credentials provided in the environment variables.
 
-LANGFUSE_PUBLIC_KEY="pk-lf-..."
-LANGFUSE_SECRET_KEY="sk-lf-..."
-LANGFUSE_AUTH=base64.b64encode(f"{LANGFUSE_PUBLIC_KEY}:{LANGFUSE_SECRET_KEY}".encode()).decode()
-
-os.environ["OTEL_EXPORTER_OTLP_ENDPOINT"] = "https://cloud.langfuse.com/api/public/otel" # EU data region
-# os.environ["OTEL_EXPORTER_OTLP_ENDPOINT"] = "https://us.cloud.langfuse.com/api/public/otel" # US data region
-os.environ["OTEL_EXPORTER_OTLP_HEADERS"] = f"Authorization=Basic {LANGFUSE_AUTH}"
-
-# your openai key
-os.environ["OPENAI_API_KEY"] = "sk-..."
+```python
+from langfuse import get_client
+ 
+langfuse = get_client()
+ 
+# Verify connection
+if langfuse.auth_check():
+    print("Langfuse client is authenticated and ready!")
+else:
+    print("Authentication failed. Please check your credentials and host.")
 ```
 
 ### Step 3: Initialize OpenLit