Compare software

PromptLayerLangfuse
Freemium

Free plan available with paid tiers for teams.

 Freemium

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

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

Checked October 2, 2026

Checked September 26, 2026

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