Voice and text-to-speech Kokoro-82M vs Piper
Kokoro-82M vs Piper: pricing, commercial use, and license
Can you ship a game made with Kokoro-82M or Piper? By stored vendor quotes: Kokoro-82M: "Pricing page lists a license"; Piper: "Partly verified".
Both columns are the ledger's stored values. Open the tool page for the full quote and source link. This page does not invent a winner.
Kokoro-82M
A pricing page names a commercial license. The terms quoted beside it may narrow that.
Piper
Commercial terms are only partly verified. This is not a yes.
Quick answers
- Can I use Kokoro-82M or Piper commercially in a game?
- Kokoro-82M: The model card says Kokoro is Apache-licensed, has been deployed in commercial APIs, and the author welcomes real-world deployments. Piper: Piper's voice docs say Piper is intended for personal use and TTS research, that it adds no restrictions of its own on voice models, and that some voices have restrictive licenses. Check each voice's MODEL_CARD.
- How much do Kokoro-82M and Piper cost?
- Kokoro-82M: The weights are free to download and run. The model card puts the April 2025 market rate for Kokoro served over third-party APIs at under $1 per million characters (under $0.06 per hour of audio). Piper: Piper is software you install yourself (pip install piper-tts). There is no paid plan; compute is on you.
Built only from rows with a stored vendor quote. Open each tool page for the exact sentence, source link, and fetch date.
| Fact | Kokoro-82M | Piper |
|---|---|---|
| Pricing | Kokoro-82Mverified The weights are free to download and run. The model card puts the April 2025 market rate for Kokoro served over third-party APIs at under $1 per million characters (under $0.06 per hour of audio). | Piperverified Piper is software you install yourself (pip install piper-tts). There is no paid plan; compute is on you. |
| Commercial use | Kokoro-82Mverified The model card says Kokoro is Apache-licensed, has been deployed in commercial APIs, and the author welcomes real-world deployments. | Piperverified Piper's voice docs say Piper is intended for personal use and TTS research, that it adds no restrictions of its own on voice models, and that some voices have restrictive licenses. Check each voice's MODEL_CARD. |
| Ownership of outputs | Kokoro-82Munverified Unverified. | Piperunverified Unverified. |
| License caveat | Kokoro-82Mverified The model card says Kokoro was trained only on permissive or non-copyrighted audio and IPA phoneme labels. | Piperverified Piper's official setup.py declares the license GPL-3.0-or-later. That governs the engine's code if you ship or modify it, not the audio you generate. |
| Steam disclosure | Kokoro-82Mverified Voice lines you generate during development and ship are Pre-Generated AI content on Steam. If the game synthesizes speech at runtime, the Live-Generated rules apply too. | Piperverified Player-facing art, sound, narrative, or localization made with this tool is the kind of shipped content Steam's Content Survey asks about (Pre-Generated). This is Valve's rule, not a statement from the vendor. |
| Engines and export | Kokoro-82Munverified Unverified. | Piperverified Piper has a command-line tool, a web server, a Python API and a C/C++ API, and a Java binding is listed. It names no Unity, Godot or Unreal plugin. |
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