Free alternatives to Murf AI for narration
Home › Guides · Last checked 2026-10-19 · Facts verified from each project's docs unless marked tested
The free swaps for Murf-style narration are Piper, Kokoro and Chatterbox. Piper is fast offline TTS that runs on a CPU or even a Raspberry Pi (GPL-3.0). Kokoro is a light open-weight model (82M parameters) whose v1.0 has 8 languages and 54 voices, with Apache-licensed weights. Chatterbox adds zero-shot voice cloning (MIT code). The catch: all three run on your own machine, and only Chatterbox clones voices.
| Murf AI | Piper | Kokoro | Chatterbox | |
|---|---|---|---|---|
| Cost | Free and paid plans (pricing) | Free | Free | Free |
| Runs where | Cloud | Your computer (CPU, Raspberry Pi) | Your computer (pip package) | Your computer |
| Voice cloning | Not checked by us | No | No (preset voices) | Yes, zero-shot |
| License | Commercial service | GPL-3.0; each voice has its own licence | Apache-licensed weights | MIT code; weights unverified |
| Catch | Plan limits | No cloning | Not tested by us | PerTh watermark on every output |
Which one to pick
- Cheap hardware or offline narration: Piper.
- Natural preset voices with a permissive license: Kokoro.
- Your own voice: Chatterbox. Every file carries an imperceptible PerTh watermark.
See all free voice tools or read free alternatives to ElevenLabs.
FAQ
Which free TTS can clone my voice?
Of these three, only Chatterbox. Piper has no voice cloning, and Kokoro's model card offers preset voices only.
Can I use Kokoro voices commercially?
Kokoro's weights are Apache-licensed and it's used in commercial APIs, per its model card. Check the card for current terms before you publish.
What's the lightest option for an old laptop?
Piper. It runs on CPU and on a Raspberry Pi. Each Piper voice has its own license, so check the voice you pick.
Have you tested these?
We used Chatterbox for a voice sample for our YouTube script in October 2026. We have not tested Piper or Kokoro; their details here come from their docs.