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LangSmithPromptLayer
Freemium

Can be tried for free, with paid plans listed on its pricing page.

 Freemium

Free plan available with paid tiers for teams.

Web Web
  • Detailed step-by-step agent tracing
  • SDKs for Python, TypeScript, Go and Java
  • Visual prompt editing without code redeploys
  • Evaluations with datasets, graders and human review
  • Proprietary hosted service
  • Self-hosting requires Kubernetes
  • Hosted service; prompts and logs live on its servers
  • Requires an account
Self-hosted, Hosted service Web application, Hosted service
Closed source Closed source
License not stated License not stated
Account needed Account needed
Needs internet Needs internet

Checked September 26, 2026

Checked October 2, 2026

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