As of: 2026-11-13 13:49 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/m/dia2/

# Nari Labs Dia2 (1B / 2B)

Nari Labs, Dia family. Status: current. Type: speech and audio. Released: 2025-11-19.

## How to call it

| Provider | Model id | Endpoint | Docs |
|---|---|---|---|
| Hugging Face | `nari-labs/Dia2-2B` |  | https://huggingface.co/nari-labs/Dia2-2B |
| GitHub |  |  | https://github.com/nari-labs/dia2 |

## Pricing

- Price not published.
- Last checked: 2026-09-29

## Specs

- Input: text, audio
- Output: audio
- Context window: not published
- Max output: not published
- Open weights: yes
- Licence: apache-2.0

## Where it stands

- Newer speech and audio models in the registry since its release: 77. The 5 newest:
  - NVIDIA Nemotron 3.5 Transcribe (30B-A4B) (2026-10-28) https://postcutoff.com/m/nemotron-3-5-transcribe/
  - Hy-SimulMT-30B-A3B (2026-10-22) https://postcutoff.com/m/hy-simulmt-30b-a3b/
  - Eleven Realtime v1 Max / Mini (2026-10-20) https://postcutoff.com/m/eleven-realtime-v1-max/
  - Voxtral Mini Transcribe 3 (+ Mini Transcribe Realtime 3) (2026-10-20) https://postcutoff.com/m/voxtral-mini-transcribe-3/
  - Voxtral Small Transcribe 3 (2026-10-20) https://postcutoff.com/m/voxtral-small-transcribe-3/
- Weights are public under a permissive licence (Apache-2.0).

## What stands out

- Streaming multi-speaker dialogue TTS: Generates [S1]/[S2] dialogue and starts producing audio from the first few input tokens (no need for full text); conditions on audio prefixes for real-time conversation; up to ~2 min per generation (Mimi codec, 12.5 Hz); word-level timestamps. Source: https://huggingface.co/nari-labs/Dia2-2B

## Notes

English only. Successor to Dia-1.6B (April 2025, github.com/nari-labs/dia). Release date 2025-11-19 from secondary sources (GitHub releases page).

Sources: https://huggingface.co/nari-labs/Dia2-2B , https://github.com/nari-labs/dia2

Model page: https://postcutoff.com/m/dia2/