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langfuse

langfuse/langfuse · Enterprise stack · Enterprise

Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.

Verified via GitHub API

  • analytics
  • llm
  • llmops
  • large-language-models
  • openai
  • self-hosted
  • ycombinator
  • monitoring
  • observability
  • open-source
  • langchain
  • llama-index
  • evaluation
  • prompt-engineering
  • prompt-management
  • playground
  • llm-evaluation
  • llm-observability
  • autogen

Data from GitHub API, refreshed Oct 17, 2026

Stars
35945
Forks
4004
License
Other
Language
TypeScript
Last commit
Oct 16, 2026
Latest release
v4.63.0
Release date
Oct 16, 2026
Contributors
225
Open issues
328

Works with — from README

Models
Bedrock, Ollama, OpenAI

Source: README.md keyword match (stated in README)

langfuse FAQ

Is langfuse free?

langfuse is open source under the Other license. Hosted services and infrastructure may have separate costs.

How popular is langfuse?

langfuse has 35945 GitHub stars as of Oct 17, 2026.

Is there a hosted version of langfuse?

A hosted alternative for langfuse is unknown (—) in this data.

What does langfuse work with?

From README: Bedrock, Ollama, OpenAI.