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Home/Compare/ChatTTS vs OpenVoice

Comparison

ChatTTS vs OpenVoice

Verdict

Pick ChatTTS when license: ChatTTS is AGPL-3.0, OpenVoice is MIT; pick OpenVoice when license: OpenVoice is MIT, ChatTTS is AGPL-3.0.

Markdown twin · ChatTTS alternatives · OpenVoice alternatives

GraphCanon updated today

ChatTTS logo

ChatTTS

2noise/ChatTTS

★ 40kpushed Apr 10, 2026
vs
OpenVoice logo

OpenVoice

myshell-ai/OpenVoice

★ 37kpushed Apr 19, 2025

Trust & integrity

SignalChatTTSOpenVoice
Maintenance
Slowing (91d since push)
As of 1d · github_public_v1
Dormant (447d since push)
As of today · github_public_v1
Provenance
Not a fork · Organization account
As of 1d · github_public_v1
Not a fork · Organization account
As of today · github_public_v1
Security (OSV)
No lockfile
As of 1d · none
72 low (72 low)
As of today · osv@v1
ChatTTS trust reportOpenVoice trust reportTrust methodology

Tagline

ChatTTS
A generative speech model for daily dialogue
OpenVoice
Instant voice cloning by MIT and MyShell. Audio foundation model.

Stars

ChatTTS
40k
OpenVoice
37k

Forks

ChatTTS
4.2k
OpenVoice
4.1k

Open issues

ChatTTS
63
OpenVoice
307

Language

ChatTTS
Python
OpenVoice
Python

Adopt for

ChatTTS
ChatTTS is a Python-based repository for generating speech tailored to everyday conversations in both Chinese and English.
OpenVoice
-

Persona

ChatTTS
-
OpenVoice
-

Runtime

ChatTTS
-
OpenVoice
-

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.
OpenVoice
MIT

Last pushed

ChatTTS
Apr 10, 2026
OpenVoice
Apr 19, 2025

Categories

ChatTTS
AI Agents, Speech & Audio
OpenVoice
Speech & Audio

Trust and health

Maintenance

ChatTTS
Slowing (36%)
OpenVoice
Dormant (18%)

Days since push

ChatTTS
91d
OpenVoice
447d

Open issues (now)

ChatTTS
63
OpenVoice
307

Security scan

ChatTTS
No lockfile
OpenVoice
72 low (72 low)

Full report

ChatTTS
Trust report
OpenVoice
Trust report

Choose ChatTTS if…

  • License: ChatTTS is AGPL-3.0, OpenVoice is MIT.
  • 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.
GitHubDetails

Choose OpenVoice if…

  • License: OpenVoice is MIT, ChatTTS is AGPL-3.0.
  • Tags unique to OpenVoice: python, text-to-speech, tts, voice-clone.

When NOT to use OpenVoice

  • Last GitHub push was 448 days ago (dormant maintenance, Apr 19, 2025). Validate activity before betting a new project on OpenVoice.
GitHubDetails

Explore

ChatTTS trust report →OpenVoice trust report →AI Agents category →Speech & Audio category →All comparisonsStack workflowsTrending tools

Sources

Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.

GitHub stars on cards: ChatTTS 40k · OpenVoice 37k (synced Jul 11, 2026).

Common questions

What is the difference between ChatTTS and OpenVoice?
ChatTTS: A generative speech model for daily dialogue. OpenVoice: Instant voice cloning by MIT and MyShell. Audio foundation model.. See the comparison table for live GitHub stats and shared categories.
When should I choose ChatTTS over OpenVoice?
Choose ChatTTS over OpenVoice when License: ChatTTS is AGPL-3.0, OpenVoice is MIT; 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 OpenVoice over ChatTTS?
Choose OpenVoice over ChatTTS when License: OpenVoice is MIT, ChatTTS is AGPL-3.0; Tags unique to OpenVoice: python, text-to-speech, tts, voice-clone.
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 OpenVoice?
Last GitHub push was 448 days ago (dormant maintenance, Apr 19, 2025). Validate activity before betting a new project on OpenVoice.
Is ChatTTS or OpenVoice more popular on GitHub?
ChatTTS has more GitHub stars (39,593 vs 36,914). Stars measure visibility, not whether either tool fits your constraints.
Are ChatTTS and OpenVoice open source?
Yes - both are open-source projects on GitHub (ChatTTS: AGPL-3.0, OpenVoice: MIT).
Where can I find alternatives to ChatTTS or OpenVoice?
GraphCanon lists graph-backed alternatives at ChatTTS alternatives and OpenVoice alternatives (ChatTTS markdown twin, OpenVoice 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 OpenVoice?
ChatTTS: Slowing. OpenVoice: Dormant. 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 OpenVoice?
GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: ChatTTS trust report; OpenVoice trust report.