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On October 28, 2026, Block's research team launched the voice model Dessa, whose training process completely excludes text; it can listen and speak simultaneously, interject naturally, and run locally on a MacBook Pro equipped with an M4 Max chip. Phoenix Tech reported the same day, contrasting Dessa with xAI's Grok Voice 3.0 approach: the latter focuses on real-time end-to-end voice interaction, targets sub-second response times as its optimization goal, and handles approximately 20,000 customer service calls per day for Starlink, with about 70% of issues requiring no transfer to a human agent. The report also mentioned that OpenAI updated its voice model GPT-Live in mid-October, adding nine new voices to the API and supporting custom voices described in text. There is currently no independent factual information on further developments regarding Dessa.
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- Source:Phoenix Technology
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Oct 28
Phoenix Technology
Twitter founder Jack Dorsey's voice model Dessa is not trained on text, forming a contrast with the Grok Voice 3.0 approach
Block's research team Dessa has launched a voice model whose training process completely excludes text; it can listen and speak at the same time, interject naturally, and run locally on a MacBook Pro equipped with an M4 Max chip. The article contrasts it with xAI's Grok Voice 3.0, which focuses on real-time end-to-end voice interaction, targets sub-second response times as its optimization goal, and handles about 20,000 customer service calls per day for Starlink, with roughly 70% of issues requiring no transfer to a human agent. The article also mentions that OpenAI updated its voice model GPT-Live in mid-October, adding nine new voices to the API and supporting custom voices described in text, while also discussing the boundaries of voice in terms of information bandwidth and social scenarios.