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OpikTruLens
Free

The open-source platform is free to self-host.

 Free

Free and open source.

Web, Self-hosted Windows, macOS, Linux
  • Tracing, automated evaluations and dashboards together
  • Covers RAG systems and agent workflows
  • OpenTelemetry-native tracing of every agent step
  • Judges explain their scores, not just give numbers
  • Self-hosting means running several services yourself
  • Contributors must sign a CLA
  • Aimed at developers comfortable writing code
  • LLM judges add their own model calls and cost
Self-hosted Downloadable app
Open source Open source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 26, 2026

Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.