nari-labs/dia2

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1172 stars · 100 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Dia2 is a streaming dialogue text-to-speech model from Nari Labs that can generate conversational audio in realtime without needing the full input text. It ships with 1B and 2B open-weight checkpoints, a Python inference library, a CLI, and a Gradio app, and supports conditioning output on audio prefixes for stable voices.

Use cases

• generate speech from text in python
• stream conversational tts in realtime
• build a speech-to-speech voice assistant
• clone or condition a voice with audio prefixes
• generate multi-speaker dialogue audio with speaker tags
• run a local text-to-speech model on gpu

When to choose

• you need realtime or streaming conversational TTS with open weights
• you want multi-speaker dialogue generation with [S1]/[S2] speaker tags
• you want to condition TTS output on prior audio for speech-to-speech pipelines
• you can run CUDA 12.8+ on a local GPU

When to avoid

• you need stable, consistent voices without conditioning or fine-tuning
• you need languages other than English or generations longer than 2 minutes
• you need a CPU-only production TTS solution
• you need a fully managed or hosted TTS API

Facets

library · maturity active

tts speech-recognition llm-inference audio-processing cli speech-processing artificial-intelligence python cli cross-platform streaming-tts dialogue-tts voice-cloning open-weights conversational-audio cuda gradio audio natural-language-processing gpu linux

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markdown · JSON · MCP: product_card(name="nari-labs/dia2")