Comparison
index-tts vs Confucius4-TTS
Verdict
Pick index-tts if indexTTS is an industrial-level controllable zero-shot text-to-speech system that excels in duration control and emotionally expressive speech generation using autoregressive models; pick Confucius4-TTS if powerful cross-lingual TTS for multilingual audio projects with no need for model fine-tuning.
Markdown twin · index-tts alternatives · Confucius4-TTS alternatives
GraphCanon updated 1d
vs
Trust & integrity
| Signal | index-tts | Confucius4-TTS |
|---|---|---|
| Maintenance | Active (14d since push) As of 3w · github_public_v1 | Very active (5d since push) As of 1d · github_public_v1 |
| Provenance | Not a fork · Personal account As of 3w · github_public_v1 | Not a fork · Personal account As of 1d · 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
- index-tts
- A Breakthrough in Emotionally Expressive and Duration-Controlled Auto-Regressive Zero-Shot Text-to-Speech
- Confucius4-TTS
- Multilingual and Cross-Lingual Zero-Shot TTS Engine
Stars
- index-tts
- 22k
- Confucius4-TTS
- 773
Forks
- index-tts
- 2.7k
- Confucius4-TTS
- 76
Open issues
- index-tts
- 369
- Confucius4-TTS
- 11
Language
- index-tts
- Python
- Confucius4-TTS
- Python
Adopt for
- index-tts
- IndexTTS is an industrial-level controllable zero-shot text-to-speech system that excels in duration control and emotionally expressive speech generation using autoregressive models.
- Confucius4-TTS
- Powerful cross-lingual TTS for multilingual audio projects with no need for model fine-tuning.
Persona
- index-tts
- -
- Confucius4-TTS
- -
Runtime
- index-tts
- -
- Confucius4-TTS
- -
License
- index-tts
- Other
- Confucius4-TTS
- Other
Last pushed
- index-tts
- Jul 14, 2026
- Confucius4-TTS
- Aug 18, 2026
Categories
- index-tts
- Speech & Audio
- Confucius4-TTS
- Speech & Audio
Trust and health
Maintenance
- index-tts
- Active (82%)
- Confucius4-TTS
- Very active (96%)
Days since push
- index-tts
- 14d
- Confucius4-TTS
- 5d
Open issues (now)
- index-tts
- 369
- Confucius4-TTS
- 11
Stars delta
- index-tts
- Unknown
- Confucius4-TTS
- +60 (30d)
Open issues delta
- index-tts
- Unknown
- Confucius4-TTS
- +1 (30d)
Full report
- index-tts
- Trust report
- Confucius4-TTS
- Trust report
Choose index-tts if…
- Tags unique to index-tts: bigvgan, indextts, tts, voice-clone.
- Use IndexTTS when precise speech duration control is required, such as for professional video dubbing projects where audio-visual synchronization needs to be exact.
- More GitHub stars (22k vs 773) - visibility, not fit.
When NOT to use index-tts
- Avoid using IndexTTS in scenarios where minimal latency is critical, as its autoregressive generation mode may introduce processing delays compared to non-autoregressive methods.
- Do not use if you require support for a wide variety of languages beyond what the system's zero-shot capabilities cover.
Choose Confucius4-TTS if…
- Tags unique to Confucius4-TTS: audio, deep-learning, fine-tuning, multi-lingual.
- Project requires support for multiple languages without the necessity of model fine-tuning.
- More recently updated (last pushed Aug 18, 2026).
When NOT to use Confucius4-TTS
- When project strictly demands language-specific TTS refinement and customization.
- For scenarios needing real-time low-latency TTS performance as Confucius4-TTS focuses on cross-lingual capabilities rather than speed optimizations.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (index-tts/index-tts) · observed Jul 29, 2026
- GitHub forks (index-tts/index-tts) · observed Jul 29, 2026
- Last push (index-tts/index-tts) · observed Jul 14, 2026
- License file (Other) · observed Jul 29, 2026
- Decision facts (enrichment) · observed Jul 16, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (netease-youdao/Confucius4-TTS) · observed Aug 24, 2026
- GitHub forks (netease-youdao/Confucius4-TTS) · observed Aug 24, 2026
- Last push (netease-youdao/Confucius4-TTS) · observed Aug 18, 2026
- License file (Other) · observed Aug 24, 2026
- Decision facts (enrichment) · observed Jul 15, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: index-tts 22k · Confucius4-TTS 773 (synced Jul 29, 2026).
Common questions
- What is the difference between index-tts and Confucius4-TTS?
- index-tts: A Breakthrough in Emotionally Expressive and Duration-Controlled Auto-Regressive Zero-Shot Text-to-Speech. Confucius4-TTS: Multilingual and Cross-Lingual Zero-Shot TTS Engine. See the comparison table for live GitHub stats and shared categories.
- When should I choose index-tts over Confucius4-TTS?
- Choose index-tts over Confucius4-TTS when Tags unique to index-tts: bigvgan, indextts, tts, voice-clone; Use IndexTTS when precise speech duration control is required, such as for professional video dubbing projects where audio-visual synchronization needs to be exact; More GitHub stars (22k vs 773) - visibility, not fit.
- When should I choose Confucius4-TTS over index-tts?
- Choose Confucius4-TTS over index-tts when Tags unique to Confucius4-TTS: audio, deep-learning, fine-tuning, multi-lingual; Project requires support for multiple languages without the necessity of model fine-tuning; More recently updated (last pushed Aug 18, 2026).
- When should I avoid index-tts?
- Avoid using IndexTTS in scenarios where minimal latency is critical, as its autoregressive generation mode may introduce processing delays compared to non-autoregressive methods. Do not use if you require support for a wide variety of languages beyond what the system's zero-shot capabilities cover.
- When should I avoid Confucius4-TTS?
- When project strictly demands language-specific TTS refinement and customization. For scenarios needing real-time low-latency TTS performance as Confucius4-TTS focuses on cross-lingual capabilities rather than speed optimizations.
- Is index-tts or Confucius4-TTS more popular on GitHub?
- index-tts has more GitHub stars (22,239 vs 773). Stars measure visibility, not whether either tool fits your constraints.
- Are index-tts and Confucius4-TTS open source?
- Yes - both are open-source projects on GitHub (index-tts: Other, Confucius4-TTS: Other).
- Where can I find alternatives to index-tts or Confucius4-TTS?
- GraphCanon lists graph-backed alternatives at index-tts alternatives and Confucius4-TTS alternatives (index-tts markdown twin, Confucius4-TTS 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, index-tts or Confucius4-TTS?
- index-tts: Active. Confucius4-TTS: Very active. 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 index-tts and Confucius4-TTS?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: index-tts trust report; Confucius4-TTS trust report.