IndexTTS
Text-to-speech system that can mimic a voice from a short sample and control pacing and expression.
Building on it: what may you do?
Short answers based on the licence, for the version in the catalog.
- B1 Change the code for internal use in your company Yes, with conditions Yes, with conditions. Fine-tunes inherit the licence and acceptable-use policy.
- B2 Build your own product or service on top and offer it to customers as SaaS Yes, with conditions Yes, with conditions: the acceptable-use policy must be passed on and thresholds checked.
- B3 Make a closed-source derivative and sell or distribute it Yes, with conditions Yes, with conditions: the licence, acceptable-use policy and attribution must ship with it.
- B4 Use the project's name and trademark No No, not without permission. The licence covers the code, not the name or logo.
Keep in mind
- AI model licence: an acceptable-use policy (AUP), user-count thresholds and sometimes geographic limits apply.
This is guidance, not legal advice. Check with a lawyer before deciding.
The licence in brief
bilibili Model Use License Agreement (IndexTTS) (LicenseRef-bilibili-Model-Use)
AI model licence. Free use and derivative works are allowed, but companies with over 100 million monthly active users or over RMB 1 billion in annual revenue must request a separate licence. The model may not be used to improve other AI models (except non-commercial ones). Not OSI-approved.
What does LicenseRef-bilibili-Model-Use mean?
This is guidance, not legal advice (inte juridisk rådgivning). Check with a lawyer before deciding.
Facts
- Licence
- LicenseRef-bilibili-Model-Use
- Licence type
- Custom AI licence
- Open core
- No
- GitHub stars
- 24.3k
- Latest activity
- Deployment
- Library
- Login/SSO
- Unknown
- API
- Unknown
- Multi-tenant
- Unknown
- EU vendor
- Unknown
- Source code
- github.com/index-tts/index-tts
- Source
- GitHub API, fetched 2026-10-03
Licence analysis per use case
Sign in to see what the licence means for eight use cases – from internal self-hosting to offering the tool as a service.
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