Comparison
ChatTTS vs dia
Verdict
Pick ChatTTS if chatTTS is a Python-based repository for generating speech tailored to everyday conversations in both Chinese and English; 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.
Markdown twin · ChatTTS alternatives · dia alternatives
GraphCanon updated 4d
Trust & integrity
| Signal | ChatTTS | dia |
|---|---|---|
| Maintenance | Slowing (127d since push) As of 4d · github_public_v1 | Slowing (251d since push) As of 3w · github_public_v1 |
| Provenance | Not a fork · Organization account As of 4d · github_public_v1 | Not a fork · Organization account As of 3w · github_public_v1 |
| OSV dependency advisories | No lockfile (source not queried) As of 1mo · osv@v1 | No lockfile (source not queried) As of 1mo · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- ChatTTS
- A generative speech model for daily dialogue
- dia
- A TTS model for generating ultra-realistic dialogue
Stars
- ChatTTS
- 40k
- dia
- 19k
Forks
- ChatTTS
- 4.3k
- dia
- 1.7k
Open issues
- ChatTTS
- 60
- dia
- 91
Language
- ChatTTS
- Python
- dia
- Python
Adopt for
- ChatTTS
- ChatTTS is a Python-based repository for generating speech tailored to everyday conversations in both Chinese and English.
- dia
- Dia is an open-weight text-to-dialogue model providing full control over scripts and voices, ideal for generating ultra-realistic dialogue.
Persona
- ChatTTS
- -
- dia
- -
Runtime
- ChatTTS
- -
- dia
- -
License
- ChatTTS
- Licensed under AGPL-3.0, which allows for free use, distribution, and modification as long as these rights are maintained in derivative works.
- dia
- Apache-2.0
Last pushed
- ChatTTS
- Apr 10, 2026
- dia
- Nov 19, 2025
Categories
- ChatTTS
- AI Agents, Speech & Audio
- dia
- Speech & Audio
Trust and health
Days since push
- ChatTTS
- 127d
- dia
- 251d
Open issues (now)
- ChatTTS
- 60
- dia
- 91
Stars delta
- ChatTTS
- +140 (30d)
- dia
- Unknown
Open issues delta
- ChatTTS
- -1 (30d)
- dia
- Unknown
Full report
- ChatTTS
- Trust report
- dia
- Trust report
Shared compatibility
- Python · ChatTTS: Python runtime · dia: Python runtime
Choose ChatTTS if…
- License: ChatTTS is AGPL-3.0, dia is Apache-2.0.
- Requirements: Python-based implementation means that familiarity with Python is necessary for effective use..
- Tags unique to ChatTTS: agent, chatgpt, chattts, chinese language.
- Also covers AI Agents.
- Use ChatTTS when you require text-to-speech functionality for daily dialogue applications, especially those involving Chinese or English languages.
When NOT to use ChatTTS
- Avoid using ChatTTS in environments where the speech generation model is expected to handle complex technical jargon or specialized vocabulary, as it's optimized for daily conversation.
- Do not use ChatTTS if your project requires the integration of more than two languages simultaneously due to its current support for only Chinese and English.
Choose dia if…
- License: dia is Apache-2.0, ChatTTS is AGPL-3.0.
- Tags unique to dia: dialogue-generation, text-to-speech, tts.
- When you require precise control over voice and script in the creation of highly realistic dialogues
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
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (2noise/ChatTTS) · observed Aug 16, 2026
- GitHub forks (2noise/ChatTTS) · observed Aug 16, 2026
- Last push (2noise/ChatTTS) · observed Apr 10, 2026
- License file (AGPL-3.0) · observed Aug 16, 2026
- Decision facts (enrichment) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (nari-labs/dia) · observed Jul 29, 2026
- GitHub forks (nari-labs/dia) · observed Jul 29, 2026
- Last push (nari-labs/dia) · observed Nov 19, 2025
- License file (Apache-2.0) · observed Jul 29, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: ChatTTS 40k · dia 19k (synced Aug 16, 2026).
Common questions
- What is the difference between ChatTTS and dia?
- ChatTTS: A generative speech model for daily dialogue. dia: A TTS model for generating ultra-realistic dialogue. See the comparison table for live GitHub stats and shared categories.
- When should I choose ChatTTS over dia?
- Choose ChatTTS over dia when License: ChatTTS is AGPL-3.0, dia is Apache-2.0; Requirements: Python-based implementation means that familiarity with Python is necessary for effective use.; Tags unique to ChatTTS: agent, chatgpt, chattts, chinese language; Also covers AI Agents; Use ChatTTS when you require text-to-speech functionality for daily dialogue applications, especially those involving Chinese or English languages.
- When should I choose dia over ChatTTS?
- Choose dia over ChatTTS when License: dia is Apache-2.0, ChatTTS is AGPL-3.0; Tags unique to dia: dialogue-generation, text-to-speech, tts; When you require precise control over voice and script in the creation of highly realistic dialogues.
- When should I avoid ChatTTS?
- Avoid using ChatTTS in environments where the speech generation model is expected to handle complex technical jargon or specialized vocabulary, as it's optimized for daily conversation. Do not use ChatTTS if your project requires the integration of more than two languages simultaneously due to its current support for only Chinese and English.
- 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 ChatTTS or dia more popular on GitHub?
- ChatTTS has more GitHub stars (39,768 vs 19,361). Stars measure visibility, not whether either tool fits your constraints.
- Are ChatTTS and dia open source?
- Yes - both are open-source projects on GitHub (ChatTTS: AGPL-3.0, dia: Apache-2.0).
- Where can I find alternatives to ChatTTS or dia?
- GraphCanon lists graph-backed alternatives at ChatTTS alternatives and dia alternatives (ChatTTS markdown twin, dia markdown twin), 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 mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, ChatTTS or dia?
- ChatTTS: Slowing. 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 ChatTTS and dia?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: ChatTTS trust report; dia trust report.