# IndexTTS-2 Review

> IndexTTS-2 review: Emotion-controllable zero-shot voice cloning for production use, but under a custom Bilibili license (not OSI-approved) with scale caps and.

![IndexTTS-2 logo](https://www.versusref.com/logos/index-tts.png)

Emotion-controllable zero-shot voice cloning for production use, but under a custom Bilibili license (not OSI-approved) with scale caps and AI-training restrictions.

Among the 46 text-to-speech tools we track, IndexTTS-2 has the 38th-widest language coverage.

See pricing · Open source · facts verified Jul 20, 2026

## What we know about IndexTTS-2

IndexTTS-2 sits in the text-to-speech apis category, where it is emotion-controllable zero-shot voice cloning for production use, but under a custom Bilibili license (not OSI-approved) with scale caps and AI-training restrictions. We keep this IndexTTS-2 profile grounded in primary sources, each fact dated to when we last confirmed it.

IndexTTS-2 does not publish a public per-minute rate we have been able to verify, so the price figure here stays blank until we can confirm one. We would rather show nothing than a guessed number; if you have a current IndexTTS-2 quote, it is the fastest way for us to close that gap.

On capabilities, IndexTTS-2 covers instant voice cloning, emotion / style controls, and self-host / on-prem option. Each of those is verified against IndexTTS-2's own docs or dashboard, not marketing copy.

IndexTTS-2 ranks the 38th-widest language coverage of the 46 text-to-speech tools we track, so where it lands for you depends on which of those matters more.

In total we track 10 verified facts for IndexTTS-2 today, each linking the primary source it came from so you can check our work - and vendor claims we have not measured ourselves are labeled as such on the IndexTTS-2 fact sheet below.

## Fact sheet

### Capabilities

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Instant voice cloning | ✓  Yes | Jul 20 | [source](https://github.com/index-tts/index-tts) |
| Languages supported | 2 languages | Jul 20 | [source](https://github.com/index-tts/index-tts) |
| Emotion / style controls | ✓  Yes | Jul 20 | [source](https://github.com/index-tts/index-tts) |

### Compliance & trust

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Self-host / on-prem option | ✓  Yes | Jul 20 | [source](https://github.com/index-tts/index-tts) |
| Model weights license | bilibili Model Use License Agreement (custom) | Jul 20 | [source](https://github.com/index-tts/index-tts/blob/main/LICENSE) |

### Build experience

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Official SDKs | Python | Jul 20 | [source](https://github.com/index-tts/index-tts) |
| Output formats | WAV (in code examples) | Jul 20 | [source](https://github.com/index-tts/index-tts) |

### Commercial

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Hardware to self-host | GPU recommended | Jul 20 | [source](https://github.com/index-tts/index-tts) |
| Project maintenance status | active | Jul 20 | [source](https://github.com/index-tts/index-tts) |
| GitHub stars | 22,001 stars | Jul 20 | [source](https://github.com/index-tts/index-tts) |

Source: https://www.versusref.com/tts/tools/index-tts/