Microsoft presented a series of changes at its May Build 2026, shifting from simple AI assistance toward autonomous agents.
Proprietary MAI Models
https://microsoft.ai/news/building-a-hillclimbing-machine-launching-seven-new-mai-models/
They introduced a new family of MAI (Microsoft AI) models, totaling 7, including MAI-Code-1-Flash and MAI-Thinking-1. Microsoft is effectively reducing its dependence on OpenAI. The company claims frontier-level results for autonomous tasks.
The MAI-Code-1-Flash model has 5B active out of 137B parameters (medium-sized) and a 2-million-token context window (extremely large), operating with record-low latency. Presentation slides look perfect: they claim it outperforms previous generations of the flagship GPT-4o. It is being positioned as the core engine for pipelines integrated into GitHub Copilot, VS Code, and other MS products.
Discussion
https://news.ycombinator.com/item?id=48374466
In a active Hacker News discussion, people note that open models like Qwen 3.6 (35B) or DeepSeek V4 Flash yield better results and run significantly faster, while GitHub Copilot's new strict token billing might make using MAI-Code-1-Flash economically unviable.
GitHub Copilot — Now a Separate App
https://github.blog/2026-06-02-github-copilot-app-the-agent-native-desktop-experience/
Copilot used to be a plugin in VS Code, then became part of it. Now, following Codex, Cursor, Zed, and others, Microsoft decided to create a standalone GitHub Copilot App — an "agent-native" desktop chat application.
This is a single control plane for agents working in parallel across isolated git trees, creating PRs, and debugging code. MS are moving away from the editor concept toward delegating entire workflows. It includes support for MCP servers.
https://www.youtube.com/watch?v=5Q5mLNYJ6Hw
Instead of getting lost on the GitHub website, the app features a convenient "On your radar" (or Inbox) tab where all your Pull Requests (PRs) and Issues from selected repositories are gathered. You can open any PR, view code changes (diff), leave comments, or approve it. Furthermore, you can tag @copilot directly in comments for fixes or explanations.
Users can create "quick chats" for general questions (even non-code related, like D&D games) or sessions tied to a specific repository. The app allows switching between different LLMs. For instance, the author uses Claude Opus 4.7 for code generation.
Agent Isolation: MXC (Microsoft Execution Containers)
https://www.microsoft.com/en-us/security/blog/2026/06/02/microsoft-build-2026-securing-code-agents-and-models/
Since agents now execute real code and interact with systems and infrastructure, Microsoft is implementing MXC at the Windows 11 kernel level. This is a new level of isolation and sandboxing specifically for AI applications. Windows is essentially turning into an "Agent Runtime" platform.
The demonstration showed OpenClaw attempting to delete all files from the desktop and failing due to these restrictions.
#githubcopilot #mai #agenticcoding