Voice & Speech

ChatTTS

Generative speech model for daily dialogue.

Status
Generally available
Last checked
Checked · Oct 14, 2026
License
Open source
Pricing
Free tier · from $0
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What it is

ChatTTS is a generative speech model designed to facilitate natural and engaging conversations in everyday scenarios, offering developers a powerful tool for integrating human-like speech capabilities into their applications.

ChatTTS stands out as an open-source, self-hosted solution for generating natural speech in daily dialogue scenarios, offering developers full control over deployment and customization.

When it fits — and when it doesn’t

A good fit for

  • Developers building self-hosted applications requiring natural speech generation

  • Projects needing flexibility in deployment without cloud dependency

  • Teams looking for open-source alternatives to proprietary speech models

Look elsewhere if

  • Applications requiring real-time streaming capabilities (batch-only architecture)

  • Budget-constrained projects where the cost of self-hosting is prohibitive

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited integrations with non-Python ecosystems

    Primary support is Python, other language bindings are experimental or unsupported

  2. 02

    Performance issues under heavy load

    Benchmarking shows significant latency increases when handling more than 10 concurrent requests

What it does well

  • Generative speech for natural dialogue

  • Open-source under AGPL-3.0 license

  • Self-hosted deployment flexibility

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

How Fast Is It?

Set up ChatTTS

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →
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ChatTTS — tracked on AI Navigator

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