Comparison
CosyVoice vs RealtimeTTS
Verdict
Pick CosyVoice when license: CosyVoice is Apache-2.0, RealtimeTTS is MIT; pick RealtimeTTS when license: RealtimeTTS is MIT, CosyVoice is Apache-2.0.
Markdown twin · CosyVoice alternatives · RealtimeTTS alternatives
GraphCanon updated today
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Trust & integrity
| Signal | CosyVoice | RealtimeTTS |
|---|---|---|
| Maintenance | Steady (46d since push) As of today · github_public_v1 | Steady (40d since push) As of today · github_public_v1 |
| Provenance | Not a fork · Organization account As of today · github_public_v1 | Not a fork · Personal account As of today · github_public_v1 |
| Security (OSV) | No lockfile As of today · none | No criticals As of today · osv@v1 |
Tagline
- CosyVoice
- Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.
- RealtimeTTS
- Converts text to speech in realtime
Stars
- CosyVoice
- 22k
- RealtimeTTS
- 4.0k
Forks
- CosyVoice
- 2.5k
- RealtimeTTS
- 399
Open issues
- CosyVoice
- 767
- RealtimeTTS
- 125
Language
- CosyVoice
- Python
- RealtimeTTS
- 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.
- RealtimeTTS
- -
Persona
- CosyVoice
- -
- RealtimeTTS
- -
Runtime
- CosyVoice
- -
- RealtimeTTS
- -
License
- CosyVoice
- Apache-2.0
- RealtimeTTS
- MIT
Last pushed
- CosyVoice
- May 25, 2026
- RealtimeTTS
- May 31, 2026
Categories
- CosyVoice
- Inference & Serving, Model Training, Speech & Audio
- RealtimeTTS
- Speech & Audio
Trust and health
Days since push
- CosyVoice
- 46d
- RealtimeTTS
- 40d
Open issues (now)
- CosyVoice
- 767
- RealtimeTTS
- 125
Owner type
- CosyVoice
- Organization
- RealtimeTTS
- User
Security scan
- CosyVoice
- No lockfile
- RealtimeTTS
- No criticals
Full report
- CosyVoice
- Trust report
- RealtimeTTS
- Trust report
Choose CosyVoice if…
- License: CosyVoice is Apache-2.0, RealtimeTTS is MIT.
- 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 (KoljaB/RealtimeTTS) · observed Jul 11, 2026
- GitHub forks (KoljaB/RealtimeTTS) · observed Jul 11, 2026
- Last push (KoljaB/RealtimeTTS) · observed May 31, 2026
- License file (MIT) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: CosyVoice 22k · RealtimeTTS 4.0k (synced Jul 11, 2026).
Common questions
- What is the difference between CosyVoice and RealtimeTTS?
- CosyVoice: Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.. RealtimeTTS: Converts text to speech in realtime. See the comparison table for live GitHub stats and shared categories.
- When should I choose CosyVoice over RealtimeTTS?
- Choose CosyVoice over RealtimeTTS when License: CosyVoice is Apache-2.0, RealtimeTTS is MIT; 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 RealtimeTTS over CosyVoice?
- Choose RealtimeTTS over CosyVoice when License: RealtimeTTS is MIT, CosyVoice is Apache-2.0; Tags unique to RealtimeTTS: python, realtime, speech-synthesis, text-to-speech; More recently updated (last pushed May 31, 2026).
- 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.
- Is CosyVoice or RealtimeTTS more popular on GitHub?
- CosyVoice has more GitHub stars (22,089 vs 3,986). Stars measure visibility, not whether either tool fits your constraints.
- Are CosyVoice and RealtimeTTS open source?
- Yes - both are open-source projects on GitHub (CosyVoice: Apache-2.0, RealtimeTTS: MIT).
- Where can I find alternatives to CosyVoice or RealtimeTTS?
- GraphCanon lists graph-backed alternatives at CosyVoice alternatives and RealtimeTTS alternatives (CosyVoice markdown twin, RealtimeTTS 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 RealtimeTTS?
- CosyVoice: Steady. RealtimeTTS: Steady. 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 RealtimeTTS?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: CosyVoice trust report; RealtimeTTS trust report.