--- title: "ChatTTS vs TTS" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/2noise-chattts-vs-mozilla-tts" tools: ["2noise-chattts", "mozilla-tts"] --- # ChatTTS vs TTS *GraphCanon updated Aug 16, 2026* ## Verdict Pick ChatTTS if chatTTS is a Python-based repository for generating speech tailored to everyday conversations in both Chinese and English; pick TTS if tTS is known for its deep learning capabilities in text-to-speech synthesis and supports Python versions up to 3.8. [ChatTTS](https://2noise.com) reports 40k GitHub stars, 4.3k forks, and 60 open issues, last pushed Apr 10, 2026. [TTS](https://github.com/mozilla/TTS) has 10k stars, 1.3k forks, and 37 open issues, last pushed Nov 9, 2023. Figures are from public GitHub metadata via [ChatTTS's repository](https://github.com/2noise/ChatTTS) and [TTS's repository](https://github.com/mozilla/TTS). | | [ChatTTS](/tools/2noise-chattts.md) | [TTS](/tools/mozilla-tts.md) | | --- | --- | --- | | Tagline | A generative speech model for daily dialogue | Deep learning for Text to Speech | | Stars | 39,768 | 10,165 | | Forks | 4,257 | 1,322 | | Open issues | 60 | 37 | | Language | Python | Jupyter Notebook | | Adopt for | ChatTTS is a Python-based repository for generating speech tailored to everyday conversations in both Chinese and English. | TTS is known for its deep learning capabilities in text-to-speech synthesis and supports Python versions up to 3.8. | | Persona | - | - | | Runtime | - | - | | License | Licensed under AGPL-3.0, which allows for free use, distribution, and modification as long as these rights are maintained in derivative works. | MPL-2.0 | | Categories | AI Agents, Speech & Audio | Speech & Audio | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [ChatTTS](/tools/2noise-chattts.md) | [TTS](/tools/mozilla-tts.md) | | --- | --- | --- | | Maintenance | Slowing (36%) | Dormant (18%) | | Days since push | 127d | 992d | | Open issues (now) | 60 | 37 | | Stars delta | +140 (30d) | Unknown | | Open issues delta | -1 (30d) | Unknown | | Full report | [trust report](/tools/2noise-chattts/trust.md) | [trust report](/tools/mozilla-tts/trust.md) | ## Shared compatibility - **Python**: [ChatTTS](/tools/2noise-chattts.md) - Python runtime; [TTS](/tools/mozilla-tts.md) - Python runtime ## Decision facts: ChatTTS - **Hosting:** unknown - **Requirements:** Python-based implementation means that familiarity with Python is necessary for effective use. - **Adopt for:** ChatTTS is a Python-based repository for generating speech tailored to everyday conversations in both Chinese and English. - **License detail:** Licensed under AGPL-3.0, which allows for free use, distribution, and modification as long as these rights are maintained in derivative works. ## Decision facts: TTS - **Adopt for:** TTS is known for its deep learning capabilities in text-to-speech synthesis and supports Python versions up to 3.8. ## Choose when ### Choose ChatTTS if… - ChatTTS is primarily Python; TTS is Jupyter Notebook. - License: ChatTTS is AGPL-3.0, TTS is MPL-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. ### Choose TTS if… - TTS is primarily Jupyter Notebook; ChatTTS is Python. - License: TTS is MPL-2.0, ChatTTS is AGPL-3.0. - Tags unique to TTS: dataset-analysis, deep-learning, gantts, glow-tts. - Use TTS when you require advanced deep learning models such as Tacotron, Tacotron2, MelGAN, and Multiband-MelGAN for high-quality voice synthesis tasks. ## 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. ## When NOT to use TTS - Avoid TTS if you require support for Python versions above 3.8 as it does not support later releases. - Do not use TTS if the only requirement is to run simple, unmodified speech synthesis tasks without training or custom development; other tools may offer easier setup. ## Common questions ### What is the difference between ChatTTS and TTS? ChatTTS: A generative speech model for daily dialogue. TTS: Deep learning for Text to Speech. See the comparison table for live GitHub stats and shared categories. ### When should I choose ChatTTS over TTS? Choose ChatTTS over TTS when ChatTTS is primarily Python; TTS is Jupyter Notebook; License: ChatTTS is AGPL-3.0, TTS is MPL-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 TTS over ChatTTS? Choose TTS over ChatTTS when TTS is primarily Jupyter Notebook; ChatTTS is Python; License: TTS is MPL-2.0, ChatTTS is AGPL-3.0; Tags unique to TTS: dataset-analysis, deep-learning, gantts, glow-tts; Use TTS when you require advanced deep learning models such as Tacotron, Tacotron2, MelGAN, and Multiband-MelGAN for high-quality voice synthesis tasks. ### 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 TTS? Avoid TTS if you require support for Python versions above 3.8 as it does not support later releases. Do not use TTS if the only requirement is to run simple, unmodified speech synthesis tasks without training or custom development; other tools may offer easier setup. ### Is ChatTTS or TTS more popular on GitHub? ChatTTS has more GitHub stars (39,768 vs 10,165). Stars measure visibility, not whether either tool fits your constraints. ### Are ChatTTS and TTS open source? Yes - both are open-source projects on GitHub (ChatTTS: AGPL-3.0, TTS: MPL-2.0). ### Where can I find alternatives to ChatTTS or TTS? GraphCanon lists graph-backed alternatives at [ChatTTS alternatives](/tools/2noise-chattts/alternatives) and [TTS alternatives](/tools/mozilla-tts/alternatives) ([ChatTTS markdown twin](/tools/2noise-chattts/alternatives.md), [TTS markdown twin](/tools/mozilla-tts/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/2noise-chattts-vs-mozilla-tts.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, ChatTTS or TTS? ChatTTS: Slowing. TTS: 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 TTS? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [ChatTTS trust report](/tools/2noise-chattts/trust); [TTS trust report](/tools/mozilla-tts/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=2noise-chattts`](/api/graphcanon/graph?tool=2noise-chattts) - 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/_