Which free text-to-speech tools can you use commercially?
checked 2026-10-08 5 entries from the Tools Atlas
By Tori, last checked 2026-10-08. Each entry below was read against its own page or licence. The verdicts are written for someone who wants to use a tool in something they sell or publish; a skip is often about a licence or a heavy setup, not about quality.
At a glance
| Name | Licence | Cost | Rules check | Atlas verdict |
|---|---|---|---|---|
| Chatterbox Multilingual | MIT (code and model files) | Free software. | Allowed | Use it |
| VoxCPM2 | Apache-2.0 (code and model files) | Free software. | Allowed | Use it |
| kokoro-onnx | MIT | Free software. | Allowed | Use it |
| Fish Speech | Fish Audio Research License | Free software. | Not allowed or too risky | Skip it |
| F5-TTS and OmniVoice | CC-BY-NC (model files) | Free software. | Not allowed or too risky | Skip it |
One by one
Chatterbox Multilingual Use it
Reads text aloud in 23 languages and can copy a voice from a short sample. A small model. MIT for the code and the model files. Every output carries a watermark; the Atlas has not checked how strong it is. Clone only your own voice or one you have permission to use, and keep the watermark.
Licence. MIT (code and model files). Cost. Free software.
- Source page, read 2026-10-08
VoxCPM2 Use it
Covers 30 languages at 48 kHz sound quality, and can design a new voice or copy one from a short clip. Apache-2.0 for code and model files. Its usage policy forbids impersonation and asks you to say when a voice is AI.
Licence. Apache-2.0 (code and model files). Cost. Free software.
- Source page, read 2026-10-08
kokoro-onnx Use it
A very small voice model (about 80 MB) that runs on an ordinary processor, in English and a few major languages. MIT. It cannot copy voices, which keeps the risk low. Use this repository: the original Kokoro one has been quiet since August 2025.
Licence. MIT. Cost. Free software.
- Source page, read 2026-10-08
Fish Speech Skip it
The best-scoring open voice model we read, but under the Fish Audio Research License: research and non-commercial use only. Commercial use needs a separate licence from its maker.
Licence. Fish Audio Research License. Cost. Free software.
- Source page, read 2026-10-08
F5-TTS and OmniVoice Skip it
The code is MIT or Apache, but the pretrained model files are CC-BY-NC, so not for commercial work. Take care with video tools such as pyvideotrans, which bundle both.
Licence. CC-BY-NC (model files). Cost. Free software.
- Source page, read 2026-10-08
Which one fits
Many languages and voice copying: Chatterbox (23 languages) or VoxCPM2 (30 languages). Both have clear commercial licences.
A computer with no strong graphics card, or a graphics card that is busy with something else: kokoro-onnx. It leaves the card free for speech-to-text or translation.
The most natural sound: Fish Speech scores highest, but you cannot use it in paid work without a separate licence, so it is not a shortcut.
Voice rules that apply to all of them
Copy only your own voice, or a voice whose owner agreed. Say when a voice is AI where a platform asks for it, and do not remove a watermark.
Questions
Is Fish Speech free for commercial use?
No. It is released under the Fish Audio Research License, for research and non-commercial use. Commercial use needs a separate licence from its maker.
Which free voice tool runs without a graphics card?
kokoro-onnx. It is about 80 MB and runs on an ordinary processor, in English and a few major languages.
Can I copy someone else's voice?
Only with their consent. Chatterbox needs the voice owner's agreement, and VoxCPM2's usage policy forbids impersonation.
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