--- title: "dia2 vs Confucius4-TTS" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/nari-labs-dia2-vs-netease-youdao-confucius4-tts" tools: ["nari-labs-dia2", "netease-youdao-confucius4-tts"] --- # dia2 vs Confucius4-TTS *GraphCanon updated Sep 20, 2026* ## Verdict Pick dia2 when license: dia2 is Apache-2.0, Confucius4-TTS is Other; pick Confucius4-TTS when license: Confucius4-TTS is Other, dia2 is Apache-2.0. [dia2](https://github.com/nari-labs/dia2) reports 1.2k GitHub stars, 102 forks, and 5 open issues, last pushed Nov 29, 2025. [Confucius4-TTS](https://github.com/netease-youdao/Confucius4-TTS) has 799 stars, 86 forks, and 11 open issues, last pushed Sep 3, 2026. Figures are from public GitHub metadata via [dia2's repository](https://github.com/nari-labs/dia2) and [Confucius4-TTS's repository](https://github.com/netease-youdao/Confucius4-TTS). | | [dia2](/tools/nari-labs-dia2.md) | [Confucius4-TTS](/tools/netease-youdao-confucius4-tts.md) | | --- | --- | --- | | Tagline | TTS model capable of streaming conversational audio in real-time. | Multilingual and Cross-Lingual Zero-Shot TTS Engine | | Stars | 1,180 | 799 | | Forks | 102 | 86 | | Open issues | 5 | 11 | | Language | Python | Python | | Adopt for | - | Powerful cross-lingual TTS for multilingual audio projects with no need for model fine-tuning. | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | Other | | Categories | Speech & Audio | Speech & Audio | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [dia2](/tools/nari-labs-dia2.md) | [Confucius4-TTS](/tools/netease-youdao-confucius4-tts.md) | | --- | --- | --- | | Maintenance | Slowing (36%) | Active (82%) | | Days since push | 295d | 16d | | Open issues (now) | 5 | 11 | | Stars delta | +20 (30d) | +86 (30d) | | Open issues delta | 0 (30d) | +1 (30d) | | Owner type | Organization | User | | Full report | [trust report](/tools/nari-labs-dia2/trust.md) | [trust report](/tools/netease-youdao-confucius4-tts/trust.md) | ## Decision facts: Confucius4-TTS - **Adopt for:** Powerful cross-lingual TTS for multilingual audio projects with no need for model fine-tuning. ## Choose when ### Choose dia2 if… - License: dia2 is Apache-2.0, Confucius4-TTS is Other. - Tags unique to dia2: open-weight. - When you need real-time streaming capabilities for text-to-speech applications. ### Choose Confucius4-TTS if… - License: Confucius4-TTS is Other, dia2 is Apache-2.0. - Tags unique to Confucius4-TTS: audio, cross-lingual, deep-learning, fine-tuning. - Project requires support for multiple languages without the necessity of model fine-tuning. ## When NOT to use dia2 - For projects aimed at batch processing or non-realtime TTS applications where instantaneous audio output isn't required. - If you are looking for an open-source model that does not include specific proprietary components like the Kyutai Mimi codec. ## 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. ## Common questions ### What is the difference between dia2 and Confucius4-TTS? dia2: TTS model capable of streaming conversational audio in real-time.. 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 dia2 over Confucius4-TTS? Choose dia2 over Confucius4-TTS when License: dia2 is Apache-2.0, Confucius4-TTS is Other; Tags unique to dia2: open-weight; When you need real-time streaming capabilities for text-to-speech applications. ### When should I choose Confucius4-TTS over dia2? Choose Confucius4-TTS over dia2 when License: Confucius4-TTS is Other, dia2 is Apache-2.0; Tags unique to Confucius4-TTS: audio, cross-lingual, deep-learning, fine-tuning; Project requires support for multiple languages without the necessity of model fine-tuning. ### When should I avoid dia2? For projects aimed at batch processing or non-realtime TTS applications where instantaneous audio output isn't required. If you are looking for an open-source model that does not include specific proprietary components like the Kyutai Mimi codec. ### 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 dia2 or Confucius4-TTS more popular on GitHub? dia2 has more GitHub stars (1,180 vs 799). Stars measure visibility, not whether either tool fits your constraints. ### Are dia2 and Confucius4-TTS open source? Yes - both are open-source projects on GitHub (dia2: Apache-2.0, Confucius4-TTS: Other). ### Where can I find alternatives to dia2 or Confucius4-TTS? GraphCanon lists graph-backed alternatives at [dia2 alternatives](/tools/nari-labs-dia2/alternatives) and [Confucius4-TTS alternatives](/tools/netease-youdao-confucius4-tts/alternatives) ([dia2 markdown twin](/tools/nari-labs-dia2/alternatives.md), [Confucius4-TTS markdown twin](/tools/netease-youdao-confucius4-tts/alternatives.md)), 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](/compare/nari-labs-dia2-vs-netease-youdao-confucius4-tts.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, dia2 or Confucius4-TTS? dia2: Slowing. Confucius4-TTS: 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 dia2 and Confucius4-TTS? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [dia2 trust report](/tools/nari-labs-dia2/trust); [Confucius4-TTS trust report](/tools/netease-youdao-confucius4-tts/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=nari-labs-dia2`](/api/graphcanon/graph?tool=nari-labs-dia2) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_