Jack Dorsey is taking on Slack with Buzz, a group chat platform for teams and their AI agents

Jack Dorsey's Block has launched Buzz, a group chat platform designed to integrate human teams with AI agents, positioning itself as an open-source, model-agnostic alternative to Slack and GitHub.

This Wire brief sits within Fusion42's coverage of Collaboration Tools and AI Agents. Wire is Fusion42's founder-focused intelligence feed: each story is connected to the funds and startups it names — every one with a live profile on Raise or Scout — so founders can follow the capital and the momentum behind the headline rather than just the headline itself. Wire analysis is one of the live surfaces Arthur reasons over.