head to head · open source
CosyVoice vs deepchat
CosyVoice has 23,661 GitHub stars, 2,690 forks, 698 open issues and last shipped 4 months ago. deepchat has 6,328 stars, 734 forks, 8 open issues and last shipped yesterday. CosyVoice leads on adoption by 274% (23,661 vs 6,328 stars). CosyVoice is written in Python under Apache-2.0; deepchat is written in TypeScript under Apache-2.0. CosyVoice has attracted 11% as many forks as stars, deepchat 12%. deepchat was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (chatgpt), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 8884 open source comparisons
Side by side
| CosyVoice | deepchat | |
|---|---|---|
| GitHub stars | ★ 24K | ★ 6.3K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-05-25 | 2026-09-17 |
| Forks | ⑂ 2.7K | ⑂ 734 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick CosyVoice if
- You weight community size — 24K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick deepchat if
- You want the deepchat feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and deepchat fits your workflow better
About CosyVoice
CosyVoice is an Apache 2.0 Python text to speech system built on large language models that ships inference, training and deployment for multi lingual voice generation, aimed at teams who need self hosted zero shot voice cloning and streaming speech synthesis rather than a hosted API.
read the full CosyVoice overview →
About deepchat
DeepChat is an open source, local first AI agent desktop client built with TypeScript under the Apache 2.0 license. It lives in the AI interaction and interfaces ecosystem, distributed as a cross platform Electron application, and it gathers models, tools, Skills, agent runtimes, Tape, and long running sessions into a single desktop app. Cloud APIs such as OpenAI, Gemini, and Anthropic work alongside locally deployed Ollama models, and any provider exposing an OpenAI, Gemini, or Anthropic API format can be connected.
read the full deepchat overview →
More in AI & Machine Learning
Related comparisons
More AI Interaction & Interfaces projects
Compare either of these against the rest of the AI Interaction & Interfaces field.
Frequently asked questions
Is CosyVoice or deepchat more popular?
CosyVoice has 23,661 GitHub stars and deepchat has 6,328. CosyVoice has the larger community by that measure.
Are CosyVoice and deepchat free?
Both are open source. CosyVoice is licensed under Apache-2.0 and deepchat under Apache-2.0. Neither carries a licence fee.
What is the difference between CosyVoice and deepchat?
CosyVoice is written in Python and deepchat in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, CosyVoice or deepchat?
Choose CosyVoice if you want the larger community (23,661 stars) or its Apache-2.0 licence terms. Choose deepchat if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.