LangSmith vs Vellum
| LangSmith | Vellum | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | $39/mo | $30/mo |
| Open source | No | No |
| Platforms | api, self-hosted, Web | Android, extension, iOS, macOS, self-hosted, Web, Windows |
| Free plan | Yes | Yes |
| Paid from | — | 30 /mo |
Both are listed in Best AI Agent Platforms, Best AI LLM Evaluation Tools. On Samsung Mobile US Press, Vellum scores higher on our published basis.