--- title: "OuteTTS vs dia" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/edwko-outetts-vs-nari-labs-dia" tools: ["edwko-outetts", "nari-labs-dia"] --- # OuteTTS vs dia *GraphCanon updated Jul 30, 2026* ## Verdict Pick OuteTTS if outeTTS is a text-to-speech tool for Python that interfaces with its model library and integrates llama.cpp; 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. [OuteTTS](https://outeai.com) reports 1.4k GitHub stars, 119 forks, and 41 open issues, last pushed Mar 23, 2026. [dia](https://github.com/nari-labs/dia) has 19k stars, 1.7k forks, and 91 open issues, last pushed Nov 19, 2025. Figures are from public GitHub metadata via [OuteTTS's repository](https://github.com/edwko/OuteTTS) and [dia's repository](https://github.com/nari-labs/dia). | | [OuteTTS](/tools/edwko-outetts.md) | [dia](/tools/nari-labs-dia.md) | | --- | --- | --- | | Tagline | Interface for OuteTTS models using Python | A TTS model for generating ultra-realistic dialogue | | Stars | 1,436 | 19,361 | | Forks | 119 | 1,688 | | Open issues | 41 | 91 | | Language | Python | Python | | Adopt for | OuteTTS is a text-to-speech tool for Python that interfaces with its model library and integrates llama.cpp. | Dia is an open-weight text-to-dialogue model providing full control over scripts and voices, ideal for generating ultra-realistic dialogue. | | 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._ | | [OuteTTS](/tools/edwko-outetts.md) | [dia](/tools/nari-labs-dia.md) | | --- | --- | --- | | Days since push | 128d | 251d | | Open issues (now) | 41 | 91 | | Owner type | User | Organization | | Full report | [trust report](/tools/edwko-outetts/trust.md) | [trust report](/tools/nari-labs-dia/trust.md) | ## Shared compatibility - **Python**: [OuteTTS](/tools/edwko-outetts.md) - Python runtime; [dia](/tools/nari-labs-dia.md) - Python runtime ## Decision facts: OuteTTS - **Adopt for:** OuteTTS is a text-to-speech tool for Python that interfaces with its model library and integrates llama.cpp. ## 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. ## Choose when ### Choose OuteTTS if… - Tags unique to OuteTTS: gguf, llama, transformers. - Use when you need access to OuteTTS-specific models. - More recently updated (last pushed Mar 23, 2026). ### 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 1.4k) - visibility, not fit. ## When NOT to use OuteTTS - Avoid if your hardware does not support the required dependencies for llama.cpp. - Not suitable if you require a tool that does not install llama.cpp by default. ## 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 ## Common questions ### What is the difference between OuteTTS and dia? OuteTTS: Interface for OuteTTS models using Python. dia: A TTS model for generating ultra-realistic dialogue. See the comparison table for live GitHub stats and shared categories. ### When should I choose OuteTTS over dia? Choose OuteTTS over dia when Tags unique to OuteTTS: gguf, llama, transformers; Use when you need access to OuteTTS-specific models; More recently updated (last pushed Mar 23, 2026). ### When should I choose dia over OuteTTS? Choose dia over OuteTTS 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 1.4k) - visibility, not fit. ### When should I avoid OuteTTS? Avoid if your hardware does not support the required dependencies for llama.cpp. Not suitable if you require a tool that does not install llama.cpp by default. ### 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 ### Is OuteTTS or dia more popular on GitHub? dia has more GitHub stars (19,361 vs 1,436). Stars measure visibility, not whether either tool fits your constraints. ### Are OuteTTS and dia open source? Yes - both are open-source projects on GitHub (OuteTTS: Apache-2.0, dia: Apache-2.0). ### Where can I find alternatives to OuteTTS or dia? GraphCanon lists graph-backed alternatives at [OuteTTS alternatives](/tools/edwko-outetts/alternatives) and [dia alternatives](/tools/nari-labs-dia/alternatives) ([OuteTTS markdown twin](/tools/edwko-outetts/alternatives.md), [dia markdown twin](/tools/nari-labs-dia/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/edwko-outetts-vs-nari-labs-dia.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, OuteTTS or dia? OuteTTS: Slowing. dia: 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 OuteTTS and dia? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [OuteTTS trust report](/tools/edwko-outetts/trust); [dia trust report](/tools/nari-labs-dia/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=edwko-outetts`](/api/graphcanon/graph?tool=edwko-outetts) - 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/_