Voice & Speech

MeloTTS

High-quality multi-lingual text-to-speech library by MyShell.ai.

Status
UnmaintainedNo commits in 609 days.
Last checked
Checked · Oct 12, 2026
License
Open source
Pricing
Free tier · from $0

What it is

MeloTTS is a high-quality multi-lingual text-to-speech library that supports English, Spanish, French, Chinese, Japanese, and Korean. It offers developers the ability to integrate natural-sounding speech into their applications across multiple languages.

MeloTTS stands out by offering high-quality text-to-speech capabilities across multiple major world languages in an open-source library format, making it a versatile choice for multilingual applications.

When it fits — and when it doesn’t

A good fit for

  • Teams building multilingual applications who need high-quality TTS support across several major world languages.

  • Developers working on projects that require natural-sounding voice output in multiple languages.

Look elsewhere if

  • Projects requiring real-time speech synthesis with extremely low latency, as MeloTTS may not be optimized for such use cases.

  • Applications needing TTS support for languages other than the six officially supported ones.

Known weaknesses

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

  1. 01

    Limited support for additional languages beyond the six primary ones

    Documentation and examples focus only on English, Spanish, French, Chinese, Japanese, and Korean

  2. 02

    Performance issues with large text inputs

    Benchmarks show significant processing delays for texts over 1000 characters

What it does well

  • Supports multiple languages including English, Spanish, French, Chinese, Japanese, and Korean.

  • High-quality speech synthesis for natural-sounding voice output.

  • Open-source with a permissive MIT 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

How Fast Is It?

Set up MeloTTS

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

Open the setup guide →
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MeloTTS — tracked on AI Navigator

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