Microsoft Build 2026: All the news about Windows, AI, RTX Spark, and more

Microsoft Build 2026 kicked off with a keynote presentation that introduced some developer-focused Windows updates, an OpenClaw-based AI assistant called Scout, the new Majorana 2 quantum computing chip, and a Surface mini PC designed for AI developers. Microsoft also rolled out a new Android-based OS called Project Solara that’s designed for gadgets that run AI agents.

Build will continue through June 3rd, and we’ll have all the updates on Microsoft’s announcements here.

Microsoft just kicked off Build 2026 with a keynote from CEO Satya Nadella and other company leaders. As expected, it was filled with announcements, ranging from new Surface hardware to an always-on personal assistant and updates across Microsoft’s in-house AI models.

Microsoft claimed last year that it had made a key breakthrough in quantum computing with Majorana 1, the company’s first quantum processor. While physicists were immediately skeptical of Microsoft’s claims, the software giant is announcing Majorana 2 today, the next generation of its topological quantum chip.

Majorana 2 contains qubits, a unit of information in quantum computing much like the binary bits that computers use today, that are 1,000 times more reliable, according to Microsoft. It’s a milestone that helps make quantum computing more reliable, thanks to the use of a new material stack and some help from Microsoft Discovery’s agentic AI.

Microsoft announced a bunch of new in-house AI models at Build 2026, including a new “flagship” model: MAI-Thinking-1. It’s an ambitious step into model development for Microsoft, which introduced its initial in-house models last year — before then, it had relied on OpenAI’s models. The two companies recently renegotiated their deal to loosen ties.

According to Microsoft, MAI-Thinking-1 is a “medium-sized model” that “matches leading models” on “key” software engineering benchmarks. Microsoft says the company “trained it from the ground up on clean data, without distillation from third-party models.”

Much like Google, Microsoft is launching its own version of OpenClaw. Microsoft Scout is an always-on assistant that integrates into Microsoft 365 apps like Outlook, OneDrive, and Microsoft Teams, allowing businesses to assign a virtual assistant to employees to help with organizing calendars, expense reporting, email drafts, and much more.

Unlike Copilot that lives inside Microsoft 365 apps, Microsoft Scout can see and do a lot more. “This is a personal assistant, it’s the first real personal assistant we’ve offered customers,” explains Omar Shahine, corporate vice president of Microsoft Scout. “I think it’s important for customers to understand that you’re going to get a phone call from this assistant, it’s a very different type of AI than chat.”

At its Build developer conference, Microsoft is launching Microsoft Execution Containers, a police-driven layer to make it more secure to run things like OpenClaw on Windows. It’s going a step further too, by allowing a companion app for OpenClaw to run contained on Windows PCs. It should stop AI agents like OpenClaw from deleting all your files. “You can totally run OpenClaw inside your company now,” says OpenClaw creator Peter Steinberger.

Microsoft just announced “Project Solara,” a new OS designed for gadgets that run AI agents, at Build 2026. The company is calling it “a new platform built from the ground up to power agent-driven experiences.” It’s built on Android, not Windows.

Microsoft demonstrated two concept Project Solara devices at Build today: Desk concept and badge concept. The desk concept is an Amazon Echo Show-like device that unlocks with facial recognition and provides access to AI agents.

Nvidia CEO Jensen Huang is on stage at Microsoft Build this morning, albeit virtually. He says Nvidia started working with Microsoft on RTX Spark about three years ago, and it has led to the creation of the new Surface Laptop Ultra and Surface RTX Spark Dev Box.

The new Surface mini PC is here. Microsoft just launched a new Surface Dev Box, and the company is already using the machine live on stage at Build. The top looks like the vent on an Xbox Series X, and inside there’s an Nvidia RTX Spark chip and 128GB of unified memory. Overall, I’d say it looks like a flattened Xbox Series X.

Build kicks off with Windows. Microsoft CEO Satya Nadella has started his Build developer keynote by focusing on Windows immediately. Microsoft is expanding Windows AI APIs to more PCs, through CPU, GPU, and NPU support. There are two new local AI Windows models too, Aion 1.0 Instruct and Aion 1.0 Plan.

Microsoft is kicking off its Build developer conference today with a promise of making Windows a trusted platform for development. As the company continues to focus on performance and reliability fixes for Windows 11, it’s also creating a developer-optimized experience that bundles a lot of useful tools and apps and embraces Linux even further.

“We have optimized the Windows 11 experience for developers, bringing frequently used command line utilities, a familiar comfort shell, faster setup experience, a built-in way to create and interact with Linux containers on Windows and a new experimental Intelligent Terminal,” explains Windows chief Pavan Davuluri.

Microsoft only just announced a new Surface Laptop Ultra at the weekend, and it’s now revealing a miniature Surface PC aimed at developers. The new Surface RTX Spark Dev Box is powered by Nvidia’s new Arm-based RTX Spark chips, just like the Surface Laptop Ultra, and is optimized for sustained workloads and local AI tasks. The Surface RTX Spark Dev Box has a 100-watt thermal envelope and 128GB of unified memory, making it capable of running up to 120 billion parameter models locally.