Chatterbox TTS vs LetMeSpeech
Chatterbox TTS
github.comLetMeSpeech
letmespeech.comSide by side
| Figure | Chatterbox TTS | LetMeSpeech |
|---|---|---|
| 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) | 7.7 (#143) |
| Spec score · Text-to-speech tools | 8.9 (#21) | 7.3 (#197) |
| Free plan | Yes | Yes |
| Intended users | The README describes Turbo for low-latency voice agents and Nano for on-device or CPU inference when memory and latency budgets are tight. | The maker describes it for students, language learners, people with dyslexia or visual impairments, professionals proofreading by ear, and people who prefer listening. |
| Platforms | linux,macos,self_hosted | web |
| What it does | Chatterbox is Resemble AI’s open-source family of text-to-speech and voice-cloning models. | LetMeSpeech converts written text to speech and highlights each word in real time. |
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.
LetMeSpeech
LetMeSpeech has no write-up on Specifiction yet; its figures are above.