{"data":{"id":2573,"lang":"en","title":"Block Unveils Dessa, a Voice Model That Listens and Talks at the Same Time and Runs Locally","summary":"Block's research lab released Dessa, a full-duplex speech-to-speech model that runs on a high-end MacBook but is not yet public.","category":"ai","category_label":"AI","published_at":"2026-10-24T22:00:57Z","updated_at":"2026-10-24T22:00:57Z","url":"https://techtools.cz/tools/news/article/2573-block-unveils-dessa-a-voice-model-that-listens-and-talks-at-the-same-time-and","api_url":"https://techtools.cz/news-api/v1/articles/2573?lang=en","markdown_url":"https://techtools.cz/news-api/v1/articles/2573.md?lang=en","image_url":"https://techcrunch.com/wp-content/uploads/2025/07/jack-dorsey.jpg?w=1024","word_count":144,"reading_time_minutes":1,"sources":[{"url":"https://techcrunch.com/2026/10/24/blocks-new-voice-model-sounds-eerily-human/","domain":"techcrunch.com"}],"translation":{"lang":"cs","id":2647,"title":"Block představil Dessa, hlasový model, který zároveň poslouchá i mluví a běží lokálně","url":"https://techtools.cz/tools/news/clanek/2647-block-predstavil-dessa-hlasovy-model-ktery-zaroven-posloucha-i-mluvi-a-bezi","api_url":"https://techtools.cz/news-api/v1/articles/2647?lang=cs"},"content":"Block, Jack Dorsey's company, has released Dessa from its research lab. It is a full-duplex speech-to-speech model: it can listen and speak at once and produces human-sounding expressions such as laughs, pauses and cries.\n\nBlock says Dessa was trained entirely on human speech using a single NVIDIA GPU rack, and that it can run locally on consumer hardware such as a MacBook M4 Max or better. Most current voice AI converts speech to text first, which loses information; Block argues Dessa builds emotion into the model itself. TechCrunch compares it with OpenAI's GPT-Live, ElevenLabs v4 and Fish Audio Drama 3.\n\nDessa is not publicly available. Block has asked safety researchers to test it, especially for cases where a voice agent could deceive people. The company says on-device operation could lower costs for business and consumer voice experiences; Square already uses voice AI for ordering."}}