5 Best Free AI Audio Generators on GitHub (Voice and Transcription)
Kokoro, Chatterbox, MeloTTS, Dia and Whisper create AI voices and transcripts for free on your own computer, and all five allow business use.
OopsMyBusiness
4 min read
Updated Nov 13, 2026 
In this article
- Why use free audio AI instead of a subscription?
- The 5 best free audio AI projects on GitHub, compared
- 1. Kokoro: the lightweight voice generator
- 2. Chatterbox: expressive voices and voice cloning
- 3. MeloTTS: accents without a graphics card
- 4. Dia: conversations, not just narration
- 5. Whisper: turn recordings into text
- Watch out: free voices you can't use for business
- Use voice cloning responsibly
- How to try one this afternoon
You can create natural AI voiceovers and accurate transcripts for free with open-source projects from GitHub, running on your own computer. For most businesses the best five are Kokoro for fast narration, Chatterbox for expressive voices and voice cloning, MeloTTS for different accents, Dia for two-person dialogue, and Whisper for turning recordings into text. All five allow commercial use.
Most businesses still pay monthly for AI voices and transcription. Here's what the free route looks like, and the catch with each option.
Why use free audio AI instead of a subscription?
- No per-character or per-minute limits. Generate as much as your computer can handle.
- Privacy. Scripts and recordings never leave your machine.
- No surprise price rises. Nobody can change the plan on you.
The trade-off is setup. Each project needs a one-time install, and long audio takes longer on an ordinary laptop.
The 5 best free audio AI projects on GitHub, compared
| Project | Best for | Business use? | Needs a graphics card? |
|---|---|---|---|
| Kokoro | Fast, clean narration | Yes (Apache 2.0) | No |
| Chatterbox | Expressive voices and cloning | Yes (MIT) | Recommended |
| MeloTTS | Different accents and languages | Yes (MIT) | No |
| Dia | Two-person dialogue and podcasts | Yes (Apache 2.0) | Yes |
| Whisper | Transcribing calls, meetings and videos | Yes (MIT) | Helps for large models |
1. Kokoro: the lightweight voice generator
Kokoro is small by AI standards, about 82 million parameters, yet produces clear, natural speech. Its size means it runs well on modest hardware, which makes it the easiest place to start. It's released under the Apache 2.0 licence, which allows commercial use.
Good for: explainer videos, product demos and reading articles aloud. The catch: you choose from preset voices rather than cloning your own, and copycat websites claim to be the "official" Kokoro. Download only from the project's own page.
2. Chatterbox: expressive voices and voice cloning
Chatterbox comes from Resemble AI and is released under the MIT licence. It can copy a voice from a short reference clip and has an "emotion exaggeration" control to make delivery calmer or more dramatic. A multilingual version covers 23 languages.
Good for: ads, character voices and a consistent brand voice. The catch: every audio file carries Resemble AI's invisible Perth watermark, and it runs best with a graphics card.
3. MeloTTS: accents without a graphics card
MeloTTS, from MyShell, supports several languages and English accents including American, British, Indian and Australian, and runs in real time on a normal processor. It's MIT licensed.
Good for: reaching customers in different regions, and quick voiceovers on any laptop. The catch: it can't clone voices.
4. Dia: conversations, not just narration
Dia, from Nari Labs, turns a script into dialogue between two speakers, including sounds like laughing or coughing. It's Apache 2.0 licensed.
Good for: podcast-style intros, training role-plays and two-voice ads. The catch: English only, it needs a capable graphics card, and voices can change between runs unless you guide them with an audio sample.
5. Whisper: turn recordings into text
Whisper is the speech-recognition model OpenAI released as open source in 2022, under the MIT licence. Give it an audio or video file and it returns a transcript, in many languages. Smaller versions are fast; larger ones are more accurate.
Good for: sales-call notes, meeting minutes, video captions and voice notes. The catch: larger versions are slow without a graphics card, and it doesn't label who is speaking on its own.
Watch out: free voices you can't use for business
Some popular free voice models are non-commercial only:
- XTTS-v2 uses the Coqui Public Model License, which restricts it to non-commercial use.
- Fish Speech's open model weights are licensed for non-commercial use, even though its code is open.
An AI model's weights can carry a different licence from its code. Check both before using a voice in anything you sell.
Use voice cloning responsibly
Only clone your own voice, or a voice you have clear written permission to use. Label AI voices where your platform or local rules expect it, and never use a cloned voice to impersonate someone.
How to try one this afternoon
- Start with Kokoro for voice or Whisper for transcripts: both are the simplest to install.
- Install Python on your computer.
- Follow the install steps on the project's official GitHub or Hugging Face page.
- Run a real 30-second script or a short recording and compare the results.
- If you need cloning or more emotion, try Chatterbox next. Its makers host a free online demo.
