Block co‑founder Jack Dorsey launched Buzz, an open‑source workplace chat that integrates human users and AI agents, positioning it as a challenger to Slack and GitHub.

Block co‑founder Jack Dorsey has entered the enterprise messaging arena with Buzz, an open‑source group chat platform that blends human participants and AI agents in a single workspace.

What is Buzz?

Buzz is designed as a lightweight alternative to Slack, offering core chat functions, threaded conversations, and native support for AI‑driven bots that can read, write, and act on messages across channels.

Open‑source foundation

The platform’s code is released under the MIT license on GitHub, allowing companies to self‑host, customize integrations, and avoid vendor lock‑in. Dorsey emphasized that “open source is the fastest path to innovation for teams that need to iterate quickly.”

AI agents built‑in

Buzz ships with a built‑in framework for AI agents, letting developers plug in large language models or task‑specific bots. Agents can summarize channel activity, schedule meetings, or even trigger automated workflows in response to keywords.

  • Self‑hosted deployment on private cloud or on‑premises
  • Native integration with OpenAI, Anthropic, and custom LLM endpoints
  • Extensible plugin system for CRM, ticketing, and DevOps tools
  • End‑to‑end encryption for all messages and bot interactions

Positioning against Slack and GitHub

By combining chat and AI in a single open‑source stack, Buzz aims to attract teams that find Slack’s pricing and closed ecosystem restrictive, while also offering a more collaborative alternative to GitHub’s recent AI‑enhanced discussion features.

Early adopters report faster onboarding for AI‑centric workflows and lower total cost of ownership, though the platform still lacks the extensive app marketplace that Slack enjoys.

Buzz is the first chat product built from the ground up for AI agents, not as an after‑thought add‑on.

The launch follows Dorsey’s broader push into decentralized and developer‑first tools, echoing his recent investments in blockchain and cryptocurrency infrastructure.

For a detailed look at Buzz’s feature set and roadmap, see the TechCrunch coverage of Jack Dorsey’s Buzz launch.