--- title: "MeloTTS vs dia" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/myshell-ai-melotts-vs-nari-labs-dia" tools: ["myshell-ai-melotts", "nari-labs-dia"] --- # MeloTTS vs dia *GraphCanon updated Sep 20, 2026* ## Verdict Pick MeloTTS if meloTTS is an MIT-licensed Python library for high-quality multi-lingual text-to-speech, supporting English, Spanish, French, Chinese, Japanese and Korean; pick dia if dia is an open-weight text-to-dialogue model providing full control over scripts and voices, ideal for generating ultra-realistic dialogue. [MeloTTS](https://github.com/myshell-ai/MeloTTS) reports 7.6k GitHub stars, 1.1k forks, and 232 open issues, last pushed Dec 24, 2024. [dia](https://github.com/nari-labs/dia) has 19k stars, 1.7k forks, and 91 open issues, last pushed Nov 19, 2025. Figures are from public GitHub metadata via [MeloTTS's repository](https://github.com/myshell-ai/MeloTTS) and [dia's repository](https://github.com/nari-labs/dia). | | [MeloTTS](/tools/myshell-ai-melotts.md) | [dia](/tools/nari-labs-dia.md) | | --- | --- | --- | | Tagline | High-quality multi-lingual text-to-speech library by MyShell.ai | A TTS model for generating ultra-realistic dialogue | | Stars | 7,644 | 19,400 | | Forks | 1,073 | 1,690 | | Open issues | 232 | 91 | | Language | Python | Python | | Adopt for | MeloTTS is an MIT-licensed Python library for high-quality multi-lingual text-to-speech, supporting English, Spanish, French, Chinese, Japanese and Korean. | Dia is an open-weight text-to-dialogue model providing full control over scripts and voices, ideal for generating ultra-realistic dialogue. | | Persona | - | - | | Runtime | - | - | | License | MIT | Apache-2.0 | | Categories | Speech & Audio | Speech & Audio | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [MeloTTS](/tools/myshell-ai-melotts.md) | [dia](/tools/nari-labs-dia.md) | | --- | --- | --- | | Maintenance | Dormant (18%) | Slowing (36%) | | Days since push | 634d | 304d | | Open issues (now) | 232 | 91 | | Stars delta | +93 (30d) | +39 (30d) | | Full report | [trust report](/tools/myshell-ai-melotts/trust.md) | [trust report](/tools/nari-labs-dia/trust.md) | ## Decision facts: MeloTTS - **Adopt for:** MeloTTS is an MIT-licensed Python library for high-quality multi-lingual text-to-speech, supporting English, Spanish, French, Chinese, Japanese and Korean. ## Decision facts: dia - **Adopt for:** Dia is an open-weight text-to-dialogue model providing full control over scripts and voices, ideal for generating ultra-realistic dialogue. ## Choose when ### Choose MeloTTS if… - License: MeloTTS is MIT, dia is Apache-2.0. - Tags unique to MeloTTS: chinese, english, french, japanese. - MeloTTS ships Docker support for self-hosted deployment. - If your project requires support for a broad language range including less common languages like Japanese or Korean in a TTS solution. ### Choose dia if… - License: dia is Apache-2.0, MeloTTS is MIT. - Tags unique to dia: dialogue-generation, tts. - When you require precise control over voice and script in the creation of highly realistic dialogues ## When NOT to use MeloTTS - If your application's required languages are not covered by MeloTTS, such as Arabic or Russian. - In situations where you need more customization options for TTS than what the library provides out-of-the-box. ## When NOT to use dia - If your setup lacks a GPU, as Dia has not yet added CPU support - In scenarios where immediate real-time performance is critical since the first run could be longer due to additional codec downloads ## Common questions ### What is the difference between MeloTTS and dia? MeloTTS: High-quality multi-lingual text-to-speech library by MyShell.ai. dia: A TTS model for generating ultra-realistic dialogue. See the comparison table for live GitHub stats and shared categories. ### When should I choose MeloTTS over dia? Choose MeloTTS over dia when License: MeloTTS is MIT, dia is Apache-2.0; Tags unique to MeloTTS: chinese, english, french, japanese; MeloTTS ships Docker support for self-hosted deployment; If your project requires support for a broad language range including less common languages like Japanese or Korean in a TTS solution. ### When should I choose dia over MeloTTS? Choose dia over MeloTTS when License: dia is Apache-2.0, MeloTTS is MIT; Tags unique to dia: dialogue-generation, tts; When you require precise control over voice and script in the creation of highly realistic dialogues. ### When should I avoid MeloTTS? If your application's required languages are not covered by MeloTTS, such as Arabic or Russian. In situations where you need more customization options for TTS than what the library provides out-of-the-box. ### When should I avoid dia? If your setup lacks a GPU, as Dia has not yet added CPU support In scenarios where immediate real-time performance is critical since the first run could be longer due to additional codec downloads ### Is MeloTTS or dia more popular on GitHub? dia has more GitHub stars (19,400 vs 7,644). Stars measure visibility, not whether either tool fits your constraints. ### Are MeloTTS and dia open source? Yes - both are open-source projects on GitHub (MeloTTS: MIT, dia: Apache-2.0). ### Where can I find alternatives to MeloTTS or dia? GraphCanon lists graph-backed alternatives at [MeloTTS alternatives](/tools/myshell-ai-melotts/alternatives) and [dia alternatives](/tools/nari-labs-dia/alternatives) ([MeloTTS markdown twin](/tools/myshell-ai-melotts/alternatives.md), [dia markdown twin](/tools/nari-labs-dia/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/myshell-ai-melotts-vs-nari-labs-dia.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, MeloTTS or dia? MeloTTS: Dormant. dia: Slowing. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for MeloTTS and dia? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [MeloTTS trust report](/tools/myshell-ai-melotts/trust); [dia trust report](/tools/nari-labs-dia/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=myshell-ai-melotts`](/api/graphcanon/graph?tool=myshell-ai-melotts) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_