Milliwatt Labs

Milliwatt Labs Model License

Version 1.0 ·

Register

This license covers the Leokani models from Milliwatt Labs (Leokani-tts 7M with its Dala and Pono voices, and Leokani-tts 4.5M) and every model Milliwatt Labs releases under it from now on. Milliwatt Labs is run by Emtanon LLC (“we”).

Free up to $1M

You may use, copy, modify, fine-tune and share the models, and use the speech they make, for any purpose, including commercial use, free of charge, if your organization has up to US$1,000,000 in annual revenue.

Personal use, research, education and non-profit use are always free, with no registration.

Commercial use

Commercial use needs a free, one-time registration. Once a year we email you a link with two buttons, Up to $1M and Over $1M. One tap is your yearly report.

Above $1M

Above US$1M in annual revenue, you pay one flat, predictable yearly fee. Contact us for it. The terms:

  • No royalties. Never per-unit, per-user or usage fees.
  • One fee covers every model, including future ones.
  • Predictable. For existing licensees, the fee rises by at most 5% a year.
  • Grace year. Your first year over US$1M is free.
  • Funding isn’t revenue. Money from investors, loans and grants doesn’t count.
  • Only what uses our models counts. Revenue means revenue from products and services that use the models.
  • No audits. You report it yourself. A knowingly false report ends this license for you.

Versions you’ve licensed stay yours

Your rights to every model version you got under this license last forever. If we change the license, or you stop paying a fee, the versions you already have keep the terms you got them under.

Copies downloaded before November 8, 2026 were licensed under CC BY-NC 4.0. You may keep using them under it, or move them to this license.

Rules that always apply

Whatever your size:

  • Consent. Don’t make a model imitate a real person’s voice without that person’s consent.
  • No impersonation. Don’t use the models, or speech made with them, to impersonate anyone or to make it sound like someone said something they didn’t.
  • No deception. No scams, phishing, fake emergency or official messages, or election-related deception.
  • Keep the watermark. Speech made with the models carries an inaudible watermark. Don’t remove, disable or defeat it, or help anyone do so.
  • Follow the law, including privacy, consumer-protection and robocall rules. Tell people when speech is synthetic wherever the law requires it or they could reasonably be misled.

Breaking these rules ends this license for you.

Sharing

If you share a model, or a model you made from one, include this license or a link to it. The people you share it with follow the same rules.

What isn’t covered

Leokani G2P versions already released under MIT and CC BY 4.0 keep those licenses. Third-party parts shipped with a model keep their own licenses, listed on its page.

No warranty

The models are provided “as is”, without warranties of any kind. Our Terms of Use cover warranty, liability and governing law.

Contact

Emtanon LLC · hello@milliwattlabs.com