Langfuse
LLM engineering platform for observability and metrics
About Langfuse
Langfuse is an open-source LLM engineering platform designed to help developers build, monitor, and optimize large language model applications. It provides tools for observability, metrics tracking, prompt management, and evaluations, enabling teams to iterate on their LLM workflows efficiently. Users can self-host or use a cloud version, making it accessible for both startups and larger enterprises.
Key Features
- LLM OBSERVABILITY
- PROMPT MANAGEMENT
- EVALUATIONS
- DATASET MANAGEMENT
- CLOUD AND SELF-HOSTING OPTIONS
- INTEGRATIONS WITH POPULAR FRAMEWORKS
- ASYNCHRONOUS OPERATION
Use Cases
- LLM APPLICATION DEVELOPMENT
- AI AGENT OPTIMIZATION
- PERFORMANCE MONITORING
- USER FEEDBACK LOOP
- CONTINUOUS INTEGRATION
Demo Video
Video Reviews
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User Reviews 5
"Langfuse hits the sweet spot between engineering requirements and empowerment of non-technical users to contribute their domain expertise."
2026-06-03"Langfuse has enabled our developers to get extremely fast feedback. It's fundamental to how our developers understand their AI implementations."
2026-06-03"When a customer pings us, we pop open Langfuse to understand what's going on. It keeps customer support resolutions at less than 8 minutes on average."
2026-06-03"Langfuse enables us to track every prompt, response, cost, and latency in real time, turning black-box models into auditable, optimizable assets."
2026-06-03"Building on Langfuse we saved 30% of external BPO cost by deflecting 50% of support conversations to AI."
2026-06-03Frequently Asked Questions
- LLM OBSERVABILITY
- PROMPT MANAGEMENT
- EVALUATIONS
- DATASET MANAGEMENT
- CLOUD AND SELF-HOSTING OPTIONS
- INTEGRATIONS WITH POPULAR FRAMEWORKS
- ASYNCHRONOUS OPERATION
Details
- Category: Agent Builder
- Industry: Technology
- Access: Open Source
- Pricing: Freemium
- Created By: Langfuse