In this episode of the AI Executive Brief from BuildClub, Stephen Forte walks through Microsoft's multi-model Copilot architecture — what it is, what it costs, and what the enterprise adoption data actually says. The episode is structured around four sections: the multi-model reasoning layer, the agentic Cowork platform, the adoption reality, and Copilot Studio's model marketplace.

Key topics covered:

• Multi-model Copilot: Critique and Council modes — Critique has GPT draft and Claude review for accuracy and citation quality, yielding a 13.8% gain on the DRACO benchmark; Council runs multiple models in parallel with a judge model synthesizing agreements and divergences
• Copilot Cowork and Agent 365 — background agentic work that runs extended research and d ...