OpenTTS vs Spex-TTS
| OpenTTS | Spex-TTS | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | $10/mo |
| Open source | No | No |
| Platforms | api, Linux, self-hosted, Web | api, Web |
| Commercial use | Yes | — |
| API access | Yes | Yes |
| Export formats | WAV | ["WAV", "raw PCM (pcm_s16le)"] |
| Platforms | web, linux, API, self-hosted | ["web", "api"] |
| Free plan | — | Yes |
| Paid from | — | 10 /mo |
| Voice cloning | — | Yes |
| Languages | — | 23 languages |
Both are listed in Best Text-to-Speech Software. On Inferse, Spex-TTS scores higher on our published basis.