Voice & Speech

CosyVoice

Multi-lingual voice generation model for inference, training and deployment.

Status
Generally available
Last checked
Checked · Oct 15, 2026
License
Open source
Pricing
Free tier · from $0
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What it is

CosyVoice is a multi-lingual large voice generation model that offers full-stack capabilities including inference, training, and deployment. It's ideal for developers looking to integrate high-quality voice synthesis into their applications across multiple languages.

CosyVoice stands out as a comprehensive, open-source solution for multilingual voice synthesis, offering full-stack support from training to deployment.

When it fits — and when it doesn’t

A good fit for

  • Teams building multilingual voice-based applications who need high-quality, customizable voice synthesis

  • Research projects focused on natural language processing and speech technology

Look elsewhere if

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

  • Applications that require extremely low latency in voice generation

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 environments

    Primary support is for Python, other language bindings are experimental and less stable

  2. 02

    Performance issues under heavy load

    Inference times increase significantly with more concurrent requests

What it does well

  • Multi-lingual voice synthesis capabilities

  • Full-stack support for inference, training and deployment

  • Open-source under Apache-2.0 license

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

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Set up CosyVoice

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

Open the setup guide →
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