bilibili Model Use License Agreement (IndexTTS)
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.
Verify with a lawyer. This is guidance, not legal advice. Check with a lawyer before deciding.
What the licence means per use case
The verdict applies to the licence family (Custom AI licence). An individual product can have its own terms; you get the full per-product analysis when you sign in. Confidence: low.
| Use case | Verdict | What it means |
|---|---|---|
| U1 Self-hosted, internal use, unmodified | Conditions apply | Accept the acceptable-use policy and check thresholds and geographic terms. |
| U2 Self-hosted and modified | Conditions apply | Fine-tunes usually inherit the licence and naming rules. |
| U3 Novro hosts it for you (single-tenant) | Conditions apply | Novro becomes a licensee; the AUP must be passed on contractually. |
| U4 Shared multi-tenant instance | Conditions apply | As above. |
| U5 In your cloud, managed by Novro | Conditions apply | As above. |
| U6 Redistribution (builds, images, appliances) | Conditions apply | Licence and AUP must be passed on, plus attribution. |
| U7 Commercial use | Conditions apply | Check thresholds (users/revenue). |
| U8 AI acceptable use (AUP, EU AI Act) | Conditions apply | Map the AUP to your use. HR decisions with AI are high-risk under the EU AI Act (Annex III). |
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.
This is guidance, not legal advice. Check with a lawyer before deciding.
Common pitfalls
- Thresholds: over 100 million MAU or over RMB 1 billion revenue needs a separate licence from bilibili.
- The model and derivative works may not be used to train or improve other AI models (except non-commercial ones).
- If you distribute the model or derivative works, recipients must be bound to the same terms by contract.
The licence text
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Products in the catalog under LicenseRef-bilibili-Model-Use
This is guidance, not legal advice. Check with a lawyer before deciding.