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PromptLayerLangSmith
Freemium

Free plan available with paid tiers for teams.

 Freemium

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

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

Checked October 2, 2026

Checked September 26, 2026

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