windows

October 9, 2026

• Microsoft makes Execution Containers generally available with local coding models

  Microsoft's Oct 7 Windows release pairs generally available MXC isolation with a local 137B/6.8B-active coding model and 256K context, giving agent builders a path to keep routine work on-device.

  137B MAI Code total parameters6.8B active parameters256K local context window

  agentswindowslocal-modelscoding