Promptfoo vs Tangle
| Promptfoo | Tangle | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | api, Linux, macOS, self-hosted, Web, Windows | api, Linux, Web |
| Free plan | Yes | Yes |
| Paid from | — | 29 /mo |
| Tool-call checks | — | Yes |
| Trace ingestion | — | Yes |
| Regression runs | — | Yes |
Both are listed in Best AI Agent Evaluation Tools. On The Geeks Club, Promptfoo scores higher on our published basis.