Oanor Readability API vs VT Writer
| Oanor Readability API | VT Writer | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | Yes |
| Paid from | €6.80/mo | — |
| Open source | No | No |
| Platforms | api | Linux, self-hosted, Web, Windows |
| Free plan | Yes | No |
| Readability scores | 6 scores | — |
| Grade-level analysis | Yes | Yes |
| Input formats | api | document |
| Sentence complexity | — | Yes |
| Plain-language rewrites | — | Yes |
Both are listed in Best AI Readability Checkers. On Specifiction, VT Writer scores higher on our published basis.