Chatterbox TTS vs FreeTTS.ai
Chatterbox TTS
github.comFreeTTS.ai
freetts.aiSide by side
| Figure | Chatterbox TTS | FreeTTS.ai |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | — | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 2 | 1 |
| Spec score · Text-to-Speech Software | 9.0 (#9) | 8.0 (#109) |
| Spec score · Text-to-speech tools | 8.9 (#21) | 7.6 (#156) |
| Commercial use | Yes | The terms say users own generated audio and may use it for personal, commercial, or creative purposes. |
| Export formats | WAV | MP3 |
| Free plan | Yes | Yes |
| Platforms | linux,macos,self_hosted | web |
| Support | The README invites users to join the project’s Discord community. | The contact page says the team aims to reply to messages within 24 hours. |
| Voice cloning | Models can generate speech conditioned on a short reference audio clip. | No |
Plans
Chatterbox TTS
- Chatterbox open-source modelsFree
- Voice AI Research (Chatterbox)Free
In their own words
Chatterbox TTS
Chatterbox TTS is a family of open-source text-to-speech models from Resemble AI. Its listed choices include Turbo, Nano, Multilingual V3, and dedicated single-language models. Turbo supports tags that can prompt reactions such as sighs, gasps, coughs, and laughter; Nano is intended for on-device or CPU use when memory and latency budgets are tight. The README lists 23 languages for Multilingual. The project supports voice cloning, audio input, batch processing, voice isolation, and WAV export. Generated audio carries Resemble AI’s PerTh watermark. The repository is MIT licensed, and its listed plan costs nothing for research and development. Resemble says it has stopped offering voice generation as a commercial product, while its models remain open and free for research and development. The README provides pip and source installation instructions and describes Python 3.11 on Debian 11, with CUDA, CPU, and MPS device options. Listed platforms are Linux, macOS, and self-hosted.