All models
expressive

IndexTTS 2

Bilibili Model Use License (commercial conditions)

Bilibili's TTS with multi-speaker and precise emotion control

IndexTTS 2, from Bilibili, targets professional dubbing: it's the rare autoregressive TTS with explicit duration control (hit an exact clip length) and disentangled emotion control — take the voice from one reference and the emotion from another, or steer it with text.

Hear IndexTTS 2

IndexTTS 2 · Default · Same three scripts across the directory.

Run it yourself

Best for: Bilibili's TTS with multi-speaker and precise emotion control

Commercial conditions: The agreement grants conditional use rather than a blanket noncommercial restriction. It includes scale thresholds, downstream obligations and restrictions on improving other AI models. The English and Chinese weight-license files disagree on the annual-revenue threshold (RMB 1 billion versus RMB 100 million); obtain publisher clarification before relying on that threshold.

Code: bilibili Model Use License Agreement. Weights: bilibili Model Use License Agreement. License sources checked 2026-09-20. Source 1Source 2Source 3Source 4Source 5

Before you choose: Compare the samples with your own use case. Check the linked documentation for code, weight, and voice license terms.

Details awaiting a fresh review. Hardware figures are estimates unless a benchmark is linked.

Compare with similar

Compare all →
BarkListen side-by-side →ZonosListen side-by-side →StyleTTS 2Listen side-by-side →

Choose an alternative to hear both models together.

Voices

1 voice
Neutral
Defaultdefault
—

The scripts

Neutral
“The quick brown fox jumps over the lazy dog near the riverbank.”
Emotional
“I can't believe you actually did it. This is incredible!”
Numbers & Dates
“On March 14th, 2025, the team raised $4.2 million at a 38% margin.”

Run IndexTTS 2

pip install indextts

Sources & setup details

IndexTTS 2 FAQ

Do I need a GPU to run IndexTTS 2?

The directory lists roughly 8 GB of VRAM as a historical estimate. Check the model documentation for your checkpoint and runtime.

Can IndexTTS 2 clone voices?

Yes — IndexTTS 2 supports voice cloning from reference audio.

What license is IndexTTS 2 released under?

IndexTTS 2 is released under the Bilibili Model Use License (commercial conditions) license. Always check the repository for the exact terms — some models license code and weights separately.

What languages does IndexTTS 2 support?

IndexTTS 2 supports Chinese, English.

Is there a hosted IndexTTS 2 API?

OpenSpeech Cloud is accepting production-access interest for IndexTTS 2, but this model is not currently hosted in Cloud. Use the official repository for current deployment options.