Jack Dorsey's Buzz Puts AI Agents in the Same Chat Threads as Humans

Jack Dorsey's Block launched Buzz on July 21, 2026 — an open-source group chat platform where human users and their AI agents share the same conversations as first-class participants, not background tools. The model-agnostic, self-sovereign desktop app is available for macOS, Windows, and Linux. Buzz acknowledges it is in its "early stages" and not yet ready for full team migration.