Jack Dorsey's company Block launched Buzz, an open-source group chat platform designed to integrate AI agents directly into team workflows alongside humans. The product is available immediately as a free desktop app for macOS, Windows, and Linux, with its source code on GitHub. Teams can now consolidate conversations with AI agents, manage GitHub projects, and customize features in a single workspace rather than across multiple platforms like Slack.
Researchers built an agent swarm system that decomposes complex tasks into hierarchical trees with planner agents (using capable models) delegating to worker agents (using cheaper, faster models), then tested it on implementing SQLite in Rust from documentation. The new swarm reached 80% test pass rate in four hours using Grok 4.5, compared to the old system's collapse before hour two on the same task. The system uses specialized coordination mechanisms—custom version control handling 1,000 commits per second, design docs with compile-checked references, third-party merge conflict resolution, and stacked review lenses—enabling productive multi-agent collaboration at scales where single agents drift or human coordination breaks down.
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