Microsoft Corp. unveiled a sweeping suite of artificial intelligence products at its annual Build developer conference on June 2, 2026, headlined by MAI-Thinking-1, the company's first in-house text-based reasoning model, powered by 35 billion parameters. Mustafa Suleyman, CEO of Microsoft AI, also introduced a family of seven new models spanning image, voice, transcription, and coding capabilities, including MAI-Image-2.5 for visual work, MAI-Transcribe-1.5 for multi-language transcription, and MAI-Code-1-Flash, an efficient inferencing model coming to VSCode.
Alongside its model announcements, Microsoft introduced Project Solara, a new operating system designed for gadgets that run AI agents. Built on Android rather than Windows, Project Solara was demonstrated via two concept devices at the conference: a desk unit and a wearable badge. Microsoft said the platform is designed to take AI agents off laptop screens and place them in mobile devices for businesses.
Microsoft also launched Microsoft Scout, an always-on AI personal assistant that integrates into Microsoft 365 applications including Outlook, OneDrive, and Teams. Scout is positioned as the first product in a new category of long-running autonomous enterprise agents the company calls 'Autopilots', and became available to developers on the opening day of Build 2026. The assistant allows businesses to assign a virtual agent to employees to assist with calendar management, expense reporting, and email drafting. Separately, Microsoft announced a partnership with the Mayo Clinic to develop a frontier AI model specifically for health, and confirmed that Microsoft Discovery, its AI platform for scientific research, has reached general availability.
On the hardware side, Microsoft unveiled the Surface Laptop Ultra ahead of the keynote, featuring Nvidia's RTX Spark system-on-chip. Nvidia CEO Jensen Huang and Qualcomm CEO Cristiano Amon both made guest appearances during the Build keynote. Microsoft also announced planned upgrades to its in-house Maia and Cobalt AI hardware to boost AI agent training. Chief Executive Satya Nadella stated that Microsoft has added more data center capacity in the last 18 months than in the first ten years of Azure.
The breadth of in-house model development at Build 2026 marks a significant shift from Microsoft's earlier reliance on OpenAI's models. Microsoft introduced its initial in-house AI models last year, and has since renegotiated its partnership with OpenAI to loosen ties between the two companies. That restructuring followed OpenAI's signing of a $50 billion deal with Amazon earlier in 2026. MAI-Thinking-1 represents the most advanced in-house reasoning capability Microsoft has disclosed publicly to date, extending a strategy of building proprietary model infrastructure across MSFT's product and cloud portfolio.
Sources: The Verge, Bloomberg, Engadget, TechRadar, Tom's Guide, Yahoo Tech