Block unveils Dessa, a locally-run full-duplex voice AI model
Block, Jack Dorsey's company, released a new voice model called Dessa from its research lab, trained entirely on human speech rather than text and runs on a single NVIDIA GPU. The model is full-duplex, meaning it can speak and listen simultaneously, and reportedly produces natural-sounding speech with laughs, pauses, and emotional cadence built directly into the audio rather than driven by text or voice tags.