All models
dialogue

Dia

Apache-2.0

Ultra-realistic two-speaker dialogue, sounds like a podcast

Dia generates full conversations directly from screenplay-style text — tag lines with [S1] and [S2] and it renders a natural two-voice dialogue in a single pass, complete with laughs, coughs, and throat-clears. A 1.6B model that went viral for podcast-style output rivaling paid tools. Nari Labs released Dia2 in November 2025.

Looking for the newer release? See Dia2 2B → These recordings remain labeled with their original version.

Hear Dia

Dia · Speaker 1 · Same three scripts across the directory.

Run it yourself

Best for: Ultra-realistic two-speaker dialogue, sounds like a podcast

Permissive model license: Original Dia-1.6B, not Dia2. Third-party codecs and any supplied reference audio retain separate terms; the model license does not confer a right to copy a person’s voice.

Code: Apache-2.0. Weights: Apache-2.0 (Dia-1.6B). License sources checked 2026-09-20. Source 1Source 2Source 3

Before you choose: Compare the samples with your own use case. Check the linked documentation for code, weight, and voice license terms.

Details awaiting a fresh review. Hardware figures are estimates unless a benchmark is linked.

Compare with similar

Compare all →
Sesame CSM-1BListen side-by-side →XTTS v2Listen side-by-side →Fish Speech 1.5Listen side-by-side →

Choose an alternative to hear both models together.

Voices

2 voices
Female
Speaker 1default
american
Male
Speaker 2
american

The scripts

Neutral
“The quick brown fox jumps over the lazy dog near the riverbank.”
Emotional
“I can't believe you actually did it. This is incredible!”
Numbers & Dates
“On March 14th, 2025, the team raised $4.2 million at a 38% margin.”

Run Dia

pip install nari-tts

Sources & setup details

Dia FAQ

Do I need a GPU to run Dia?

The directory lists roughly 10 GB of VRAM as a historical estimate. Check the model documentation for your checkpoint and runtime.

Can Dia clone voices?

Yes — Dia supports voice cloning from reference audio.

What license is Dia released under?

Dia is released under the Apache-2.0 license. Always check the repository for the exact terms — some models license code and weights separately.

What languages does Dia support?

Dia supports English.

Is there a hosted Dia API?

OpenSpeech Cloud is accepting production-access interest for Dia, but this model is not currently hosted in Cloud. Use the official repository for current deployment options.