Comparison
CosyVoice vs chatterbox-tts-api
Verdict
Pick CosyVoice if cosyVoice is a Python-based multi-lingual large voice generation model. It supports extensive capabilities including fine-tuning, TTS (Text-To-Speech), and natural language generation; pick chatterbox-tts-api if chatterbox-TTS-API is a locally hosted Python-based text-to-speech API with capabilities similar to ElevenLabs, offering an OpenAI-compatible interface for generating voice-cloned speech.
Markdown twin · CosyVoice alternatives · chatterbox-tts-api alternatives
GraphCanon updated 1w
vs
Trust & integrity
| Signal | CosyVoice | chatterbox-tts-api |
|---|---|---|
| Maintenance | Steady (59d since push) As of 4w · github_public_v1 | Slowing (232d since push) As of 1w · github_public_v1 |
| Provenance | Not a fork · Organization account As of 4w · github_public_v1 | Not a fork · Personal account As of 1w · 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
- CosyVoice
- Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.
- chatterbox-tts-api
- Local OpenAI-compatible text-to-speech API using Chatterbox
Stars
- CosyVoice
- 22k
- chatterbox-tts-api
- 666
Forks
- CosyVoice
- 2.6k
- chatterbox-tts-api
- 152
Open issues
- CosyVoice
- 756
- chatterbox-tts-api
- 16
Language
- CosyVoice
- Python
- chatterbox-tts-api
- Python
Adopt for
- CosyVoice
- CosyVoice is a Python-based multi-lingual large voice generation model. It supports extensive capabilities including fine-tuning, TTS (Text-To-Speech), and natural language generation.
- chatterbox-tts-api
- Chatterbox-TTS-API is a locally hosted Python-based text-to-speech API with capabilities similar to ElevenLabs, offering an OpenAI-compatible interface for generating voice-cloned speech.
Persona
- CosyVoice
- -
- chatterbox-tts-api
- -
Runtime
- CosyVoice
- -
- chatterbox-tts-api
- -
License
- CosyVoice
- Apache-2.0
- chatterbox-tts-api
- Chatterbox-TTS-API is distributed under the AGPL-3.0 license, ensuring any modifications or derivative works must be shared openly.
Last pushed
- CosyVoice
- May 25, 2026
- chatterbox-tts-api
- Dec 23, 2025
Categories
- CosyVoice
- Inference & Serving, Model Training, Speech & Audio
- chatterbox-tts-api
- Speech & Audio
Trust and health
Maintenance
- CosyVoice
- Steady (60%)
- chatterbox-tts-api
- Slowing (36%)
Days since push
- CosyVoice
- 59d
- chatterbox-tts-api
- 232d
Open issues (now)
- CosyVoice
- 756
- chatterbox-tts-api
- 16
Owner type
- CosyVoice
- Organization
- chatterbox-tts-api
- User
Full report
- CosyVoice
- Trust report
- chatterbox-tts-api
- Trust report
Shared compatibility
- Python · CosyVoice: Python runtime · chatterbox-tts-api: Python runtime
Choose CosyVoice if…
- License: CosyVoice is Apache-2.0, chatterbox-tts-api is AGPL-3.0.
- Tags unique to CosyVoice: audio-generation, cantonese, chatbot, chinese.
- Also covers Inference & Serving, Model Training.
- When you need support for multiple languages like Cantonese, Chinese, English, Japanese, and Korean.
When NOT to use CosyVoice
- If your project specifically requires fine-tuned performance in languages not supported by CosyVoice such as Arabic or Spanish.
- When strict real-time speech synthesis requirements are essential, as CosyVoice may face delays depending on the environment's computational power and model complexity.
Choose chatterbox-tts-api if…
- License: chatterbox-tts-api is AGPL-3.0, CosyVoice is Apache-2.0.
- Requirements: Requires a local setup environment that supports CUDA for optimal performance; Docker can simplify deployment..
- Tags unique to chatterbox-tts-api: ai, chatterbox, cuda, docker.
- When you need a self-hosted solution that mirrors the functionality of ElevenLabs or other proprietary TTS services and requires compatibility with existing ecosystems like Open WebUI or AnythingLLM.
When NOT to use chatterbox-tts-api
- If you require integrations specific to ElevenLabs' proprietary voice models as Chatterbox-TTS-API, despite its capabilities, does not directly support their unique voice libraries.
- For users needing a fully managed service without the complexities of local deployment and maintenance, like that offered by cloud-based TTS providers.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (FunAudioLLM/CosyVoice) · observed Jul 24, 2026
- GitHub forks (FunAudioLLM/CosyVoice) · observed Jul 24, 2026
- Last push (FunAudioLLM/CosyVoice) · observed May 25, 2026
- License file (Apache-2.0) · observed Jul 24, 2026
- Decision facts (enrichment) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (travisvn/chatterbox-tts-api) · observed Aug 13, 2026
- GitHub forks (travisvn/chatterbox-tts-api) · observed Aug 13, 2026
- Last push (travisvn/chatterbox-tts-api) · observed Dec 23, 2025
- License file (AGPL-3.0) · observed Aug 13, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
GitHub stars on cards: CosyVoice 22k · chatterbox-tts-api 666 (synced Jul 24, 2026).
Common questions
- What is the difference between CosyVoice and chatterbox-tts-api?
- CosyVoice: Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.. chatterbox-tts-api: Local OpenAI-compatible text-to-speech API using Chatterbox. See the comparison table for live GitHub stats and shared categories.
- When should I choose CosyVoice over chatterbox-tts-api?
- Choose CosyVoice over chatterbox-tts-api when License: CosyVoice is Apache-2.0, chatterbox-tts-api is AGPL-3.0; Tags unique to CosyVoice: audio-generation, cantonese, chatbot, chinese; Also covers Inference & Serving, Model Training; When you need support for multiple languages like Cantonese, Chinese, English, Japanese, and Korean.
- When should I choose chatterbox-tts-api over CosyVoice?
- Choose chatterbox-tts-api over CosyVoice when License: chatterbox-tts-api is AGPL-3.0, CosyVoice is Apache-2.0; Requirements: Requires a local setup environment that supports CUDA for optimal performance; Docker can simplify deployment.; Tags unique to chatterbox-tts-api: ai, chatterbox, cuda, docker; When you need a self-hosted solution that mirrors the functionality of ElevenLabs or other proprietary TTS services and requires compatibility with existing ecosystems like Open WebUI or AnythingLLM.
- When should I avoid CosyVoice?
- If your project specifically requires fine-tuned performance in languages not supported by CosyVoice such as Arabic or Spanish. When strict real-time speech synthesis requirements are essential, as CosyVoice may face delays depending on the environment's computational power and model complexity.
- When should I avoid chatterbox-tts-api?
- If you require integrations specific to ElevenLabs' proprietary voice models as Chatterbox-TTS-API, despite its capabilities, does not directly support their unique voice libraries. For users needing a fully managed service without the complexities of local deployment and maintenance, like that offered by cloud-based TTS providers.
- Is CosyVoice or chatterbox-tts-api more popular on GitHub?
- CosyVoice has more GitHub stars (22,373 vs 666). Stars measure visibility, not whether either tool fits your constraints.
- Are CosyVoice and chatterbox-tts-api open source?
- Yes - both are open-source projects on GitHub (CosyVoice: Apache-2.0, chatterbox-tts-api: AGPL-3.0).
- Where can I find alternatives to CosyVoice or chatterbox-tts-api?
- GraphCanon lists graph-backed alternatives at CosyVoice alternatives and chatterbox-tts-api alternatives (CosyVoice markdown twin, chatterbox-tts-api 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, CosyVoice or chatterbox-tts-api?
- CosyVoice: Steady. chatterbox-tts-api: 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 CosyVoice and chatterbox-tts-api?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: CosyVoice trust report; chatterbox-tts-api trust report.