In four simulated tasks, one agent serving everyone beat teams of per-user agents from Anthropic, OpenAI and Alibaba. Three environments are out as MAMUBench.
When AI agents send each other messages, the old queueing problems come back with new twists: a message delivered but never read, a duplicate that repeats an action, and a relayed yes that nobody actually gave.
GitHub Changelog (Oct 1, 2026): dynamic workflows in public preview for Copilot CLI, app, and SDK—code-defined multi-agent orchestration (sequential/parallel), handoffs, verification, checkpoints. Not computer use.
JetBrains opened early access for Air in JetBrains IDEs—Marketplace plugin or native in 2026.3 EAP. Bring-your-own Codex, Copilot, Claude, Junie, and ACP; multi-agent sessions. Early access, not generally available.