--- title: "dia vs VieNeu-TTS" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/nari-labs-dia-vs-pnnbao97-vieneu-tts" tools: ["nari-labs-dia", "pnnbao97-vieneu-tts"] --- # dia vs VieNeu-TTS *GraphCanon updated Jul 29, 2026* ## Verdict Pick dia if dia is an open-weight text-to-dialogue model providing full control over scripts and voices, ideal for generating ultra-realistic dialogue; pick VieNeu-TTS if vieNeu-TTS offers on-device Vietnamese text-to-speech services in real-time with CPU inference, ideal for environments needing local processing. [dia](https://github.com/nari-labs/dia) reports 19k GitHub stars, 1.7k forks, and 91 open issues, last pushed Nov 19, 2025. [VieNeu-TTS](https://www.vieneu.io) has 2.3k stars, 675 forks, and 8 open issues, last pushed Jul 17, 2026. Figures are from public GitHub metadata via [dia's repository](https://github.com/nari-labs/dia) and [VieNeu-TTS's repository](https://github.com/pnnbao97/VieNeu-TTS). | | [dia](/tools/nari-labs-dia.md) | [VieNeu-TTS](/tools/pnnbao97-vieneu-tts.md) | | --- | --- | --- | | Tagline | A TTS model for generating ultra-realistic dialogue | Vietnamese TTS with instant voice cloning, on-device and real-time CPU inference | | Stars | 19,361 | 2,258 | | Forks | 1,688 | 675 | | Open issues | 91 | 8 | | Language | Python | Python | | Adopt for | Dia is an open-weight text-to-dialogue model providing full control over scripts and voices, ideal for generating ultra-realistic dialogue. | VieNeu-TTS offers on-device Vietnamese text-to-speech services in real-time with CPU inference, ideal for environments needing local processing. | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | Apache-2.0 | | Categories | Speech & Audio | Speech & Audio | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [dia](/tools/nari-labs-dia.md) | [VieNeu-TTS](/tools/pnnbao97-vieneu-tts.md) | | --- | --- | --- | | Maintenance | Slowing (36%) | Active (82%) | | Days since push | 251d | 12d | | Open issues (now) | 91 | 8 | | Owner type | Organization | User | | Full report | [trust report](/tools/nari-labs-dia/trust.md) | [trust report](/tools/pnnbao97-vieneu-tts/trust.md) | ## Shared compatibility - **Python**: [dia](/tools/nari-labs-dia.md) - Python runtime; [VieNeu-TTS](/tools/pnnbao97-vieneu-tts.md) - Python runtime ## Decision facts: dia - **Adopt for:** Dia is an open-weight text-to-dialogue model providing full control over scripts and voices, ideal for generating ultra-realistic dialogue. ## Decision facts: VieNeu-TTS - **Adopt for:** VieNeu-TTS offers on-device Vietnamese text-to-speech services in real-time with CPU inference, ideal for environments needing local processing. ## Choose when ### Choose dia if… - Tags unique to dia: dialogue-generation. - When you require precise control over voice and script in the creation of highly realistic dialogues - More GitHub stars (19k vs 2.3k) - visibility, not fit. ### Choose VieNeu-TTS if… - Tags unique to VieNeu-TTS: deep-learning, on-device-ml, real-time, speech-synthesis. - You require a text-to-speech solution specifically tailored for the Vietnamese language. - More recently updated (last pushed Jul 17, 2026). ## When NOT to use dia - If your setup lacks a GPU, as Dia has not yet added CPU support - In scenarios where immediate real-time performance is critical since the first run could be longer due to additional codec downloads ## When NOT to use VieNeu-TTS - The application demands TTS services in languages other than Vietnamese. - You seek a solution that performs inference exclusively on GPUs as VieNeu-TTS prioritizes CPU usage even with GPU availability. - Deployment needs are not compatible with on-device processing, and cloud-based TTS solutions are preferred. ## Common questions ### What is the difference between dia and VieNeu-TTS? dia: A TTS model for generating ultra-realistic dialogue. VieNeu-TTS: Vietnamese TTS with instant voice cloning, on-device and real-time CPU inference. See the comparison table for live GitHub stats and shared categories. ### When should I choose dia over VieNeu-TTS? Choose dia over VieNeu-TTS when Tags unique to dia: dialogue-generation; When you require precise control over voice and script in the creation of highly realistic dialogues; More GitHub stars (19k vs 2.3k) - visibility, not fit. ### When should I choose VieNeu-TTS over dia? Choose VieNeu-TTS over dia when Tags unique to VieNeu-TTS: deep-learning, on-device-ml, real-time, speech-synthesis; You require a text-to-speech solution specifically tailored for the Vietnamese language; More recently updated (last pushed Jul 17, 2026). ### When should I avoid dia? If your setup lacks a GPU, as Dia has not yet added CPU support In scenarios where immediate real-time performance is critical since the first run could be longer due to additional codec downloads ### When should I avoid VieNeu-TTS? The application demands TTS services in languages other than Vietnamese. You seek a solution that performs inference exclusively on GPUs as VieNeu-TTS prioritizes CPU usage even with GPU availability. Deployment needs are not compatible with on-device processing, and cloud-based TTS solutions are preferred. ### Is dia or VieNeu-TTS more popular on GitHub? dia has more GitHub stars (19,361 vs 2,258). Stars measure visibility, not whether either tool fits your constraints. ### Are dia and VieNeu-TTS open source? Yes - both are open-source projects on GitHub (dia: Apache-2.0, VieNeu-TTS: Apache-2.0). ### Where can I find alternatives to dia or VieNeu-TTS? GraphCanon lists graph-backed alternatives at [dia alternatives](/tools/nari-labs-dia/alternatives) and [VieNeu-TTS alternatives](/tools/pnnbao97-vieneu-tts/alternatives) ([dia markdown twin](/tools/nari-labs-dia/alternatives.md), [VieNeu-TTS markdown twin](/tools/pnnbao97-vieneu-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-dia-vs-pnnbao97-vieneu-tts.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, dia or VieNeu-TTS? dia: Slowing. VieNeu-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 dia and VieNeu-TTS? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [dia trust report](/tools/nari-labs-dia/trust); [VieNeu-TTS trust report](/tools/pnnbao97-vieneu-tts/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=nari-labs-dia`](/api/graphcanon/graph?tool=nari-labs-dia) - 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/_