Comparison
ChatTTS vs espeak-ng
Verdict
Pick ChatTTS if chatTTS is a Python-based repository for generating speech tailored to everyday conversations in both Chinese and English; pick espeak-ng if eSpeak NG: Free text-to-speech engine with over a hundred languages and accents in C under GPL-3.0.
Markdown twin · ChatTTS alternatives · espeak-ng alternatives
GraphCanon updated 2d
vs
Trust & integrity
| Signal | ChatTTS | espeak-ng |
|---|---|---|
| Maintenance | Slowing (127d since push) As of 2d · github_public_v1 | Very active (1d since push) As of 3w · github_public_v1 |
| Provenance | Not a fork · Organization account As of 2d · 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
- espeak-ng
- Open source speech synthesizer supporting more than hundred languages and accents
Stars
- ChatTTS
- 40k
- espeak-ng
- 6.7k
Forks
- ChatTTS
- 4.3k
- espeak-ng
- 1.3k
Open issues
- ChatTTS
- 60
- espeak-ng
- 594
Language
- ChatTTS
- Python
- espeak-ng
- C
Adopt for
- ChatTTS
- ChatTTS is a Python-based repository for generating speech tailored to everyday conversations in both Chinese and English.
- espeak-ng
- eSpeak NG: Free text-to-speech engine with over a hundred languages and accents in C under GPL-3.0
Persona
- ChatTTS
- -
- espeak-ng
- -
Runtime
- ChatTTS
- -
- espeak-ng
- -
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.
- espeak-ng
- GPL-3.0
Last pushed
- ChatTTS
- Apr 10, 2026
- espeak-ng
- Jul 27, 2026
Categories
- ChatTTS
- AI Agents, Speech & Audio
- espeak-ng
- Speech & Audio
Trust and health
Maintenance
- ChatTTS
- Slowing (36%)
- espeak-ng
- Very active (96%)
Days since push
- ChatTTS
- 127d
- espeak-ng
- 1d
Open issues (now)
- ChatTTS
- 60
- espeak-ng
- 594
Stars delta
- ChatTTS
- +140 (30d)
- espeak-ng
- Unknown
Open issues delta
- ChatTTS
- -1 (30d)
- espeak-ng
- Unknown
Full report
- ChatTTS
- Trust report
- espeak-ng
- Trust report
Choose ChatTTS if…
- ChatTTS is primarily Python; espeak-ng is C.
- License: ChatTTS is AGPL-3.0, espeak-ng is GPL-3.0.
- 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 espeak-ng if…
- espeak-ng is primarily C; ChatTTS is Python.
- License: espeak-ng is GPL-3.0, ChatTTS is AGPL-3.0.
- Tags unique to espeak-ng: android, espeak, espeak-ng, speech-synthesis.
- When multilingual support across over a hundred languages is required.
When NOT to use espeak-ng
- Avoid if proprietary software development prohibits use of GPL-3.0 licensed tools.
- Not ideal if fine-grain control and quality over diverse accents are more important than extensive language coverage.
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 (espeak-ng/espeak-ng) · observed Jul 29, 2026
- GitHub forks (espeak-ng/espeak-ng) · observed Jul 29, 2026
- Last push (espeak-ng/espeak-ng) · observed Jul 27, 2026
- License file (GPL-3.0) · 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 · espeak-ng 6.7k (synced Aug 16, 2026).
Common questions
- What is the difference between ChatTTS and espeak-ng?
- ChatTTS: A generative speech model for daily dialogue. espeak-ng: Open source speech synthesizer supporting more than hundred languages and accents. See the comparison table for live GitHub stats and shared categories.
- When should I choose ChatTTS over espeak-ng?
- Choose ChatTTS over espeak-ng when ChatTTS is primarily Python; espeak-ng is C; License: ChatTTS is AGPL-3.0, espeak-ng is GPL-3.0; 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 espeak-ng over ChatTTS?
- Choose espeak-ng over ChatTTS when espeak-ng is primarily C; ChatTTS is Python; License: espeak-ng is GPL-3.0, ChatTTS is AGPL-3.0; Tags unique to espeak-ng: android, espeak, espeak-ng, speech-synthesis; When multilingual support across over a hundred languages is required.
- 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 espeak-ng?
- Avoid if proprietary software development prohibits use of GPL-3.0 licensed tools. Not ideal if fine-grain control and quality over diverse accents are more important than extensive language coverage.
- Is ChatTTS or espeak-ng more popular on GitHub?
- ChatTTS has more GitHub stars (39,768 vs 6,688). Stars measure visibility, not whether either tool fits your constraints.
- Are ChatTTS and espeak-ng open source?
- Yes - both are open-source projects on GitHub (ChatTTS: AGPL-3.0, espeak-ng: GPL-3.0).
- Where can I find alternatives to ChatTTS or espeak-ng?
- GraphCanon lists graph-backed alternatives at ChatTTS alternatives and espeak-ng alternatives (ChatTTS markdown twin, espeak-ng 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 espeak-ng?
- ChatTTS: Slowing. espeak-ng: Very active. 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 espeak-ng?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: ChatTTS trust report; espeak-ng trust report.