Microsoft published a 37-page behavior code for its MAI models and opened it to public consultation.

Nadella announced it September 13, The Verge reports the document the next day. It's the first time Microsoft has publicly documented behavior standards for the MAI line introduced in June 2026 under Mustafa Suleyman. Nadella endorsed deliberate pacing and embedded evaluators while arguing alignment governance "cannot be controlled by a handful of entities." A second frontier lab publishing an inspectable behavior spec makes cross-vendor policy comparison concrete instead of rhetorical.