Dessa: the most authentic full-duplex speech model ever built
Dessa is a new full-duplex speech AI model trained exclusively on human conversation rather than text. The developers claim it offers a more natural, emotionally nuanced, and realistic interaction experience than existing text-based voice models.
Why it matters
This represents a potential shift in AI development toward audio-native models that prioritize human-like cadence and emotional intelligence over text-processing capabilities.
Join the waitlist We believe voice is the most natural way to interact with intelligence, so we created Dessa, the most authentic full-duplex speech model ever built. Talking with it feels like talking with a person…full of emotion, nuance, pauses, and a natural cadence.
Interacting with current voice AI can just plain suck. It turns your voice into text and throws away an incredible amount of information text alone can’t carry. The most powerful AIs in the world can’t hear how you feel. We think that’s ridiculous, leads to a worse experience, and is potentially dangerous.
We trained Dessa from scratch on nothing but human conversation. Sounds! No text, no pretrained models. It learned to hold a real-time conversation simply by listening. As far as we know, Dessa is the world’s first AI you can have a realistic live conversation with that was trained only from human speech.
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