Amazon Polly vs OpenVox
| Amazon Polly | OpenVox | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | $4/mo | $19.99/mo |
| Open source | No | No |
| Platforms | api, Web | api, macOS, Windows |
| Voice cloning | Yes | Yes |
| API access | Yes | Yes |
| Languages | 42 languages | — |
| Maximum input | 6,000 characters | — |
| Export formats | mp3, ogg_vorbis, ogg_opus, pcm, mu-law, a-law | WAV, MP3, M4A |
| Platforms | web, api | macOS, Windows, iPadOS, local API |
| Free plan | — | Yes |
| Commercial use | — | Yes |
Both are listed in Best Text-to-Speech Software. On Inferse, Amazon Polly scores higher on our published basis.