Chatterbox TTS vs MARS5-TTS
Chatterbox TTS
github.comMARS5-TTS
github.comSide by side
| Figure | Chatterbox TTS | MARS5-TTS |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 1 |
| Spec score · Text-to-Speech Software | 9.0 (#9) | 8.0 (#112) |
| Spec score · Text-to-speech tools | 8.9 (#21) | 7.6 (#159) |
| Commercial use | Yes | Yes |
| License | The code and model listing identify the project as MIT licensed, permitting modification and redistribution subject to the license notice. | The English model is open-sourced under GNU AGPL 3.0, and the README says to email CAMB.AI about commercial inquiries or licensing the closed-source version. |
| Platforms | linux,macos,self_hosted | api,self_hosted |
| Support | The README invites users to join the project’s Discord community. | The repository invites questions and feedback through the CAMB.AI forum and Discord, and lists [email protected] for API credit inquiries. |
| Voice cloning | Models can generate speech conditioned on a short reference audio clip. | Speaker identity is specified with an audio reference, and supplying its transcript enables a slower deep-clone mode intended to improve cloning quality. |
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.