Dia TTS TTS
A 1.6B-parameter model purpose-built for generating natural multi-speaker dialogue, not just single-voice narration.
Wrap your text in SSML tags for precise control:
<speak><prosody rate="slow">Slow speech</prosody></speak>
Tags the selected model understands — click to drop one into your text where it happens:
This model reads plain text, so inline tags are ignored. For tag-based emotion, switch to an expressive model like Orpheus or Bark.
Define custom pronunciations (word = pronunciation):
About Dia TTS
Dia by Nari Labs is a 1.6-billion-parameter text-to-speech model designed from the ground up for dialogue rather than monologue. It generates conversations between two speakers with realistic turn-taking, prosody, and emotional expression, producing audio that sounds like a real exchange instead of two voices read separately. Architecturally it pairs an autoregressive transformer with the Descript Audio Codec (DAC) for waveform generation. Dia is a strong fit for podcast-style content, scripted audiobook dialogue, and conversational scenes, and is released under Apache 2.0. Generations are heavier than single-voice models, so it favors quality over raw speed.
Best for: Podcasts, audiobook dialogues, conversational content
Browse all Dia TTS voicesAt a glance
- Developer
- Nari Labs
- License
- Apache 2.0
- Tier
- standard
- Speed
- medium
- Voice cloning
- No
- Languages
- English
- Max characters
- 800