Chatterbox TTS vs Inworld AI
Chatterbox TTS
github.com
Inworld AI
inworld.aiSide by side
| Figure | Chatterbox TTS | Inworld AI |
|---|---|---|
| Price from | Free | $25/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | — | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 6 |
| Spec score · Game Voice Generators | 8.9 (#6) | 8.2 (#19) |
| Founded | 2019 | 2021 |
| Product | Chatterbox is a family of open-source text-to-speech models by Resemble AI. | Inworld describes itself as a research lab and inference provider for realtime AI at consumer scale, with first-party TTS and STT models and customer-selected LLMs. |
| Support | The README invites users to join the project’s Discord community. | The pricing page lists community support on On-Demand through Builder, priority email support on Developer and Growth, and an account manager plus Slack channel for Enterprise. |
Plans
Chatterbox TTS
- Chatterbox open-source modelsFree
- Voice AI Research (Chatterbox)Free
Inworld AI
- On-DemandFree
- Creator$25 a month
- Builder$100 a month
- Developer$300 a month
- Growth$1,500 a month
- EnterprisePriced on request
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.