At Build 2026 Microsoft Doubles Down On Proprietary Ai Models To Win Every Layer Of The Ai Stack

Microsoft CEO Satya Nadella kicked off the annual Build 2026 keynote in San Francisco, doubling down on AI agents and proprietary models as the company seeks to compete more directly with OpenAI, Google, and Anthropic. The company has long been one of the worl... Microsoft CEO Satya Nadella kicked off the annual Build 2026 keynote in San Francisco, doubling down on AI agents and proprietary models as the company seeks to compete more directly with OpenAI, Google, and Anthropic. The company has long been one of the world’s largest software companies and a leading provider of cloud infrastructure and services. Yet despite its scale, it has historically struggled to build its own cutting-edge artificial intelligence models. That changed on Wednesday, when the company took its first major step toward reducing its dependence on OpenAI, the creator of ChatGPT, in which it has invested in billions. During the opening day of its Build developer conference, Nadella previewed Microsoft’s first reasoning AI model, the inaugural model in a new family of MAI models. He also announced Project Soltera, an Android-based software platform that Microsoft describes as “a chip-to-cloud platform designed for an open, multi-agent world that expands how agents are built, deployed, and experienced.” Microsoft also unveiled Microsoft Scout, an “always-on” assistant designed to help users prepare for meetings, manage schedules, and draft emails. The assistant is based on OpenClaw. Here’s everything Microsoft announced on the first day of Build, and why it matters to developers. At its Build developer conference, Microsoft unveiled MAI–Code-1-Flash, its first reasoning model that takes written response from humans and generate a source code for websites and applications. The AI system is very similar to models offered by OpenAI, Google, and Anthropic, and the company jumps on the trend of vibe coding in a big way where AI is being used to write a code. MAI-Code-1-Flash is part of MAI-Thinking-1, Microsoft’s first reasoning model. The model is medium-sized (35 billion active parameter model with a 128K context window) and is “built for high efficiency and performance, but importantly, at a low token cost,” according to Kyle Daigle, Microsoft’s chief of developer marketing and chief operating officer of GitHub, in a blog post. MAI-Thinking-1 is available in Microsoft Foundry as a private preview. Microsoft also unveiled other in-house models for generating images, transcribing audio, creating and synthetic voices. Perhaps the announcement that took everyone by surprise was the launch of Project Soltera, an Android-based operating system designed to run multiple AI agents in a secure environment. The platform is essentially designed to power a new generation of business-focused devices that users interact with primarily through artificial intelligence agents. Steven Bathiche, a technical fellow in Microsoft’s Applied Sciences Group, previewed a device resembling an employee badge, featuring Wi-Fi, Bluetooth, and wireless connectivity, along with a touchscreen display and a fingerprint reader. A second device, a size of an Amazon Echo Show and Google Next Hub is a compact desktop unit with a built-in screen. Both devices are designed to