Comparison
CosyVoice vs dia2
Verdict
Pick CosyVoice when tags unique to CosyVoice: audio-generation, cantonese, chatbot, chatgpt; pick dia2 when tags unique to dia2: open-weight, python, text-to-speech.
Markdown twin · CosyVoice alternatives · dia2 alternatives
GraphCanon updated today
Trust & integrity
| Signal | CosyVoice | dia2 |
|---|---|---|
| Maintenance | Steady (46d since push) As of today · github_public_v1 | Slowing (224d since push) As of today · github_public_v1 |
| Provenance | Not a fork · Organization account As of today · github_public_v1 | Not a fork · Organization account As of today · github_public_v1 |
| Security (OSV) | No lockfile As of today · none | No lockfile As of today · none |
Tagline
- CosyVoice
- Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.
- dia2
- TTS model capable of streaming conversational audio in realtime.
Stars
- CosyVoice
- 22k
- dia2
- 1.2k
Forks
- CosyVoice
- 2.5k
- dia2
- 99
Open issues
- CosyVoice
- 767
- dia2
- 5
Language
- CosyVoice
- Python
- dia2
- 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.
- dia2
- -
Persona
- CosyVoice
- -
- dia2
- -
Runtime
- CosyVoice
- -
- dia2
- -
License
- CosyVoice
- Apache-2.0
- dia2
- Apache-2.0
Last pushed
- CosyVoice
- May 25, 2026
- dia2
- Nov 29, 2025
Categories
- CosyVoice
- Inference & Serving, Model Training, Speech & Audio
- dia2
- Speech & Audio
Trust and health
Maintenance
- CosyVoice
- Steady (60%)
- dia2
- Slowing (36%)
Days since push
- CosyVoice
- 46d
- dia2
- 224d
Open issues (now)
- CosyVoice
- 767
- dia2
- 5
Full report
- CosyVoice
- Trust report
- dia2
- Trust report
Choose CosyVoice if…
- Tags unique to CosyVoice: audio-generation, cantonese, chatbot, chatgpt.
- 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.
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 11, 2026
- GitHub forks (FunAudioLLM/CosyVoice) · observed Jul 11, 2026
- Last push (FunAudioLLM/CosyVoice) · observed May 25, 2026
- License file (Apache-2.0) · observed Jul 11, 2026
- Decision facts (enrichment) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (nari-labs/dia2) · observed Jul 11, 2026
- GitHub forks (nari-labs/dia2) · observed Jul 11, 2026
- Last push (nari-labs/dia2) · observed Nov 29, 2025
- License file (Apache-2.0) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: CosyVoice 22k · dia2 1.2k (synced Jul 11, 2026).
Common questions
- What is the difference between CosyVoice and dia2?
- CosyVoice: Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.. dia2: TTS model capable of streaming conversational audio in realtime.. See the comparison table for live GitHub stats and shared categories.
- When should I choose CosyVoice over dia2?
- Choose CosyVoice over dia2 when Tags unique to CosyVoice: audio-generation, cantonese, chatbot, chatgpt; Also covers Inference & Serving, Model Training; When you need support for multiple languages like Cantonese, Chinese, English, Japanese, and Korean.
- When should I choose dia2 over CosyVoice?
- Choose dia2 over CosyVoice when Tags unique to dia2: open-weight, python, text-to-speech; Leaner open-issue backlog (5).
- 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 dia2?
- Last GitHub push was 225 days ago (slowing maintenance, Nov 29, 2025). Validate activity before betting a new project on dia2.
- Is CosyVoice or dia2 more popular on GitHub?
- CosyVoice has more GitHub stars (22,089 vs 1,154). Stars measure visibility, not whether either tool fits your constraints.
- Are CosyVoice and dia2 open source?
- Yes - both are open-source projects on GitHub (CosyVoice: Apache-2.0, dia2: Apache-2.0).
- Where can I find alternatives to CosyVoice or dia2?
- GraphCanon lists graph-backed alternatives at CosyVoice alternatives and dia2 alternatives (CosyVoice markdown twin, dia2 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 dia2?
- CosyVoice: Steady. dia2: 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 dia2?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: CosyVoice trust report; dia2 trust report.