What is Langfuse?
Latest launch MIT
Summary
Open source platform for tracing, evaluating and improving AI agents and LLM applications.
- Category
- Agent infra
- Open source
- Yes
- License
- MIT
- MCP
- Yes
- Pricing
- Not stated in the sources on this page.
Langfuse describes itself as an open source agent evals and observability platform that connects tracing, monitoring, datasets, experiments and evaluation in one loop. It lists a CLI, a skill file and MCP access for coding agents.
This hub was created with the dated launch Langfuse v4.57.0 adds FIPS auth and API key expiration, released October 12, 2026. Browse the agent infra category for related tools.
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Launches and updates
Langfuse v4.57.0 adds FIPS auth and API key expiration
LangfuseLangfuse v4.57.0, released October 12, 2026, adds FIPS-mode password hashing, gateway API key expiration and a Turnstile captcha option on credential auth.
Category: Agent infra
Pricing: Open source
Guides covering Langfuse
Questions
What is Langfuse?
According to its site, Langfuse is an open source agent evals and observability platform to trace, evaluate and improve AI agents.
Is Langfuse open source?
The product site says all product features are MIT licensed, though the GitHub API reports no recognized license for the repository.
Does Langfuse support MCP?
The product site says SKILL.md, CLI and MCP connect coding agents to Langfuse.