head to head · open source
CosyVoice vs rikkahub
CosyVoice has 23,661 GitHub stars, 2,690 forks, 698 open issues and last shipped 4 months ago. rikkahub has 7,686 stars, 683 forks, 282 open issues and last shipped yesterday. CosyVoice leads on adoption by 208% (23,661 vs 7,686 stars). CosyVoice is written in Python under Apache-2.0; rikkahub is written in Kotlin under AGPL-3.0. CosyVoice has attracted 11% as many forks as stars, rikkahub 9%. rikkahub 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.
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Side by side
| CosyVoice | rikkahub | |
|---|---|---|
| GitHub stars | ★ 24K | ★ 7.7K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Python | Kotlin |
| Last push | 2026-05-25 | 2026-09-17 |
| Forks | ⑂ 2.7K | ⑂ 683 |
| 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 rikkahub if
- You want the rikkahub feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Kotlin
- You evaluated both and rikkahub 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 rikkahub
RikkaHub is a native Android LLM chat client, written in Kotlin and released under the AGPL 3.0 licence, that lets a single user switch between different AI providers inside the same conversation.
read the full rikkahub overview →
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Frequently asked questions
Is CosyVoice or rikkahub more popular?
CosyVoice has 23,661 GitHub stars and rikkahub has 7,686. CosyVoice has the larger community by that measure.
Are CosyVoice and rikkahub free?
Both are open source. CosyVoice is licensed under Apache-2.0 and rikkahub under AGPL-3.0. Neither carries a licence fee.
What is the difference between CosyVoice and rikkahub?
CosyVoice is written in Python and rikkahub in Kotlin. 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 rikkahub?
Choose CosyVoice if you want the larger community (23,661 stars) or its Apache-2.0 licence terms. Choose rikkahub if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.