Chatterbox by Resemble AI
MIT-licensed open TTS with zero-shot cloning in 23 languages and a built-in Perth watermark.
Voiceover (text-to-speech) Open source
Price
Free
Self-hosted; compute only (0.5B params).
Commercial use
Yes
MIT
Credit the author
Not needed
No credit needed
Agent access
Package (npm/PyPI)
Rules for your agent
Copied.
- Chatterbox (Voiceover (text-to-speech)). MIT-licensed open TTS with zero-shot cloning in 23 languages and a built-in Perth watermark. Price: free; commercial use OK; no credit needed. Connect: PyPI chatterbox-tts. Rule: Keep the MIT license notice when you redistribute the code or weights. License: https://github.com/resemble-ai/chatterbox (checked 2026-10-10; details: https://agentgid.com/assets/chatterbox/)
Paste it into your prompt or AGENTS.md. It is built from the license and API terms below.
License
| License | MIT |
|---|---|
| Commercial use | Commercial use OK |
| Credit | No credit needed |
| Inside your app or game | Can ship inside your app |
| Monetized YouTube | OK in monetized YouTube videos |
| AI training | Not stated |
| Bots and bulk downloads | Not stated |
| Rules |
|
Connect it to an agent
| MCP server | None found |
|---|---|
| API | No public API: download by hand |
| PyPI | pip install chatterbox-tts |
| GitHub | resemble-ai/chatterbox |
Pricing
| Free | Self-hosted; compute only (0.5B params). |
|---|---|
| Paid from | — |
| Usage price | — |
| Good to know | The code has no consent gate for cloning. |
Sources
Read on Oct 10, 2026: github.com/resemble-ai/chatterbox, huggingface.co/ResembleAI/chatterbox.
Not legal advice. Check the license page before you ship.
Alternatives to Chatterbox
| Pick for your agent | Source | Price | License | Monetized YouTube | Agent access |
|---|---|---|---|---|---|
| Cartesia Sonic Sonic TTS API (Sonic 3.6 claims 44 languages) with instant and pro voice cloning. |
Free tier · from $5/mo | Commercial: conditions | With conditions | MCP API | |
| ElevenLabs Text-to-speech and voice cloning API in many languages, with an official MCP server. |
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| Fish Audio TTS app and pay-as-you-go API priced per UTF-8 byte; S2.1-Pro claims 83 languages. |
Free tier · from $11/mo | Commercial: conditions | With conditions | MCP API | |
| Hume Octave Octave TTS with voice cloning and an official MCP server. |
Free tier · from $3/mo | Commercial: conditions | With conditions | MCP API | |
| Speechify API TTS API (Simba models) with a free plan that lists commercial use. |
Free tier · from $10/mo | Commercial OK | With conditions | API | |
| WellSaid TTS voices with commercial rights on paid plans; API access is available. |
Free tier · from $10/mo | Commercial: conditions | With conditions | API | |
| Kokoro-82M 82M-parameter open-weight TTS model under Apache-2.0 with fixed voice packs. |
Free | Commercial OK No credit | Yes | npm | |
| Piper Fast local TTS engine (GPL-3.0) with downloadable voices under per-voice licenses. |
Free | Commercial: conditions Credit varies | With conditions | PyPI |
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Copied. Paste it into your prompt or AGENTS.md.