Block launches Dessa AI model trained on human conversation
Jack Dorsey's Block announced the launch of its new AI model named Dessa, which is trained exclusively on human speech.

Model training and capabilities
The company states that everything the model knows came directly from human speech. Dessa functions as a true speech-to-speech model that can run locally on a Mac.
Shared conversation examples
Block shared chats showing the model talking like an awkward new friend. One clip features the model initially mistaking a speaker for someone named Ronaldo before correcting itself.
Video demonstrations available
The website includes clips of Dessa playing a guessing game over voice. Other examples show the model discussing Christopher Nolan films and reacting to a surprise trip to Paris.
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