Compare software

LangfusePromptLayer
Freemium

Open source for self-hosting, with a hosted version that can be started for free.

 Freemium

Free plan available with paid tiers for teams.

Web, Self-hosted Web
  • Tracing, prompt management and evaluation in one tool
  • Can be self-hosted or used as a hosted service
  • Visual prompt editing without code redeploys
  • Evaluations with datasets, graders and human review
  • Requires instrumenting your application with its SDK
  • Self-hosting means running and maintaining the server yourself
  • Hosted service; prompts and logs live on its servers
  • Requires an account
Self-hosted, Hosted service Web application, Hosted service
Open source Closed source
License not stated License not stated
Not stated if an account is needed Account needed
Not stated if it works offline Needs internet

Checked September 26, 2026

Checked October 2, 2026

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