Langfuse
Open-source platform for tracing, prompt management and evaluation of LLM apps, self-hosted or as a cloud service.
- Open source
- Can run on your own servers
- Developer API
Open-source tool from Comet for logging traces, running evaluations and testing prompts for LLM apps and agents.
Not enough info yet on developer API, works with MCP. Check the tool's own site.
Listing written by WithAutobot, checked 2026-11-04. Report a correction or request removal. Back to agent observability and evaluation.