Block's AI model Dessa engages in realistic conversations

On October 24, 2026, Jack Dorsey's Block unveiled an AI model named Dessa, trained exclusively on human conversation. The model was showcased through example chats highlighting its ability to engage in realistic dialogue, albeit with some awkward moments. One such example, shared by Dessa lead Ragavan Thurairatnam, involved a conversation where the model initially misidentified the speaker as 'Ronaldo.' Block claims to have developed the first AI model capable of full-duplex speech-to-speech conversations. The release was highlighted as a significant milestone in AI development, emphasizing the model's training on speech data alone. The announcement was featured in The Verge, underscoring its importance in the current AI landscape. Dessa's capabilities were presented as a breakthrough in creating conversational AI, with Block positioning it as a unique achievement in the field. The model's ability to engage in natural back-and-forth dialogue was a key focus, despite occasional missteps. The release marked a notable step in the evolution of AI communication tools, with Block aiming to set a new standard for interactive AI models. The company's emphasis on training data and conversational realism highlights its strategic direction in the AI space. The unveiling of Dessa reflects Block's ongoing efforts to innovate in AI technology. By focusing on speech-based training and real-time interaction, the model represents a significant advancement in the field. Block's commitment to developing AI that can engage in natural conversations underscores its vision for the future of human-machine interaction. The release of Dessa is expected to influence the broader AI industry, setting new benchmarks for conversational AI models.