Jack Dorsey launches Buzz, an open source group chat app built around AI agents

12:43 PM · July 22, 2026

Jack Dorsey launched Buzz, an open source group chat platform built around the idea that teams increasingly work alongside AI agents rather than only other humans, according to TechCrunch, positioning the product as a direct challenger to Slack. Rather than treating AI as an add on feature bolted onto an existing chat product, Buzz is designed from the ground up to let AI agents participate in team conversations as first class members alongside human coworkers, reflecting a broader bet that workplace chat tools built before the current wave of capable AI agents will need a fundamental rearchitecting rather than incremental features to remain relevant. The open source nature of the release is itself a notable choice for a workplace collaboration tool, a category historically dominated by closed, proprietary platforms like Slack and Microsoft Teams, and suggests Dorsey is betting that openness and extensibility will matter more to teams adopting AI agents into their daily workflows than the polish of a more tightly controlled proprietary product. The launch continues Dorsey's pattern since leaving Twitter of building smaller, more experimental products outside the control of large incumbents, and adds a specific, well funded new entrant to the increasingly crowded field of startups trying to rebuild workplace communication tools around AI agents as default participants rather than optional add-ons.