--- title: "ChatTTS vs PPASR" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/2noise-chattts-vs-yeyupiaoling-ppasr" tools: ["2noise-chattts", "yeyupiaoling-ppasr"] --- # ChatTTS vs PPASR *GraphCanon updated Jul 11, 2026* ## Verdict Pick ChatTTS when license: ChatTTS is AGPL-3.0, PPASR is Apache-2.0; pick PPASR when license: PPASR is Apache-2.0, ChatTTS is AGPL-3.0. [ChatTTS](https://2noise.com) reports 40k GitHub stars, 4.2k forks, and 63 open issues, last pushed Apr 10, 2026. [PPASR](https://github.com/yeyupiaoling/PPASR) has 873 stars, 129 forks, and 1 open issues, last pushed Dec 17, 2025. Figures are from public GitHub metadata via [ChatTTS's repository](https://github.com/2noise/ChatTTS) and [PPASR's repository](https://github.com/yeyupiaoling/PPASR). | | [ChatTTS](/tools/2noise-chattts.md) | [PPASR](/tools/yeyupiaoling-ppasr.md) | | --- | --- | --- | | Tagline | A generative speech model for daily dialogue | 基于PaddlePaddle实现端到端中文语音识别，从入门到实战，超简单的入门案例，超实用的企业项目。支持当前最流行的DeepSpeech2、Conformer、Squeezeformer模型 | | Stars | 39,593 | 873 | | Forks | 4,249 | 129 | | Open issues | 63 | 1 | | Language | Python | Python | | Adopt for | ChatTTS is a Python-based repository for generating speech tailored to everyday conversations in both Chinese and English. | - | | 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. | Apache-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) | [PPASR](/tools/yeyupiaoling-ppasr.md) | | --- | --- | --- | | Days since push | 91d | 205d | | Open issues (now) | 63 | 1 | | Owner type | Organization | User | | Security scan | No lockfile | 6 low (6 low) | | Full report | [trust report](/tools/2noise-chattts/trust.md) | [trust report](/tools/yeyupiaoling-ppasr/trust.md) | ## 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. ## Choose when ### Choose ChatTTS if… - License: ChatTTS is AGPL-3.0, PPASR 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. ### Choose PPASR if… - License: PPASR is Apache-2.0, ChatTTS is AGPL-3.0. - Tags unique to PPASR: asr, chinese, conformer, deep-learning. - Leaner open-issue backlog (1). ## 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 PPASR - Last GitHub push was 206 days ago (slowing maintenance, Dec 17, 2025). Validate activity before betting a new project on PPASR. ## Common questions ### What is the difference between ChatTTS and PPASR? ChatTTS: A generative speech model for daily dialogue. PPASR: 基于PaddlePaddle实现端到端中文语音识别，从入门到实战，超简单的入门案例，超实用的企业项目。支持当前最流行的DeepSpeech2、Conformer、Squeezeformer模型. See the comparison table for live GitHub stats and shared categories. ### When should I choose ChatTTS over PPASR? Choose ChatTTS over PPASR when License: ChatTTS is AGPL-3.0, PPASR 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 PPASR over ChatTTS? Choose PPASR over ChatTTS when License: PPASR is Apache-2.0, ChatTTS is AGPL-3.0; Tags unique to PPASR: asr, chinese, conformer, deep-learning; Leaner open-issue backlog (1). ### 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 PPASR? Last GitHub push was 206 days ago (slowing maintenance, Dec 17, 2025). Validate activity before betting a new project on PPASR. ### Is ChatTTS or PPASR more popular on GitHub? ChatTTS has more GitHub stars (39,593 vs 873). Stars measure visibility, not whether either tool fits your constraints. ### Are ChatTTS and PPASR open source? Yes - both are open-source projects on GitHub (ChatTTS: AGPL-3.0, PPASR: Apache-2.0). ### Where can I find alternatives to ChatTTS or PPASR? GraphCanon lists graph-backed alternatives at [ChatTTS alternatives](/tools/2noise-chattts/alternatives) and [PPASR alternatives](/tools/yeyupiaoling-ppasr/alternatives) ([ChatTTS markdown twin](/tools/2noise-chattts/alternatives.md), [PPASR markdown twin](/tools/yeyupiaoling-ppasr/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-yeyupiaoling-ppasr.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, ChatTTS or PPASR? ChatTTS: Slowing. PPASR: 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 PPASR? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [ChatTTS trust report](/tools/2noise-chattts/trust); [PPASR trust report](/tools/yeyupiaoling-ppasr/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/_