# ChatTTS Review

> ChatTTS review: Optimized for natural dialogue-style speech for LLM assistants; the licensing combination (AGPLv3+ code, CC BY-NC 4.0 weights.

![ChatTTS logo](https://www.versusref.com/logos/chattts.png)

Optimized for natural dialogue-style speech for LLM assistants; the licensing combination (AGPLv3+ code, CC BY-NC 4.0 weights, research/education only) rules out most commercial SaaS use without a separate deal.

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

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

## What we know about ChatTTS

This is our verified profile of ChatTTS, a text-to-speech apis platform - optimized for natural dialogue-style speech for LLM assistants; the licensing combination (AGPLv3+ code, CC BY-NC 4.0 weights, research/education only) rules out most commercial SaaS use without a separate deal. Every fact about ChatTTS below carries the source it came from and the day we checked it.

ChatTTS 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 ChatTTS quote, it is the fastest way for us to close that gap.

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

ChatTTS 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 ChatTTS 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 ChatTTS fact sheet below.

## Fact sheet

### Capabilities

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Streaming audio output | ✓  Yes | Jul 20 | [source](https://github.com/2noise/ChatTTS) |
| Instant voice cloning | ✗  No | Jul 20 | [source](https://github.com/2noise/ChatTTS) |
| Languages supported | 2 languages | Jul 20 | [source](https://github.com/2noise/ChatTTS) |
| Emotion / style controls | ✓  Yes | Jul 20 | [source](https://github.com/2noise/ChatTTS) |

### Compliance & trust

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Self-host / on-prem option | ✓  Yes | Jul 20 | [source](https://github.com/2noise/ChatTTS) |
| Model weights license | CC BY-NC 4.0 (weights); AGPLv3+ (code) | Jul 20 | [source](https://github.com/2noise/ChatTTS) |

### Build experience

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Official SDKs | Python (pip package 'chattts') | Jul 20 | [source](https://github.com/2noise/ChatTTS) |

### Commercial

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Hardware to self-host | At least 4 GB GPU memory for a 30-second clip | Jul 20 | [source](https://github.com/2noise/ChatTTS) |
| Project maintenance status | active (slowing) | Jul 20 | [source](https://github.com/2noise/ChatTTS) |
| GitHub stars | 39,652 stars | Jul 20 | [source](https://github.com/2noise/ChatTTS) |

Source: https://www.versusref.com/tts/tools/chattts/