Why Is OpenAI Secretly Buying Tens of Thousands of Macs?

OpenAI just made a hardware move nobody saw coming — and it has nothing to do with building Macs into a product. According to reporting from The Information, OpenAI has purchased tens of thousands of Mac mini and Mac Studio computers, not for employees, but to train AI. Specifically, the machines are reportedly being used to develop computer-use agents: AI systems built to operate software directly, clicking through menus, following multi-step instructions, and completing tasks inside an actual operating system instead of just generating text. That's a different job than training a chatbot, and it needs different hardware — a Mac mini or Mac Studio can run macOS natively, giving researchers a real desktop environment to drop an AI agent into, with genuine menus, prompts, and failure points, instead of a simulation.

OpenAI isn't the only one eyeing macOS this way. Separate reporting, via The Decoder and also citing The Information, says Anthropic uses Apple hardware for related AI work too. The details and scale aren't confirmed to match, but the pattern is telling: if you're building AI meant to operate everyday software, access to real macOS environments starts to look less like a nice-to-have and more like a requirement.

There's a ripple effect worth watching if you're Mac-shopping. The Decoder reports that some of the most powerful Mac configurations have been hard to get for months — and while AI labs buying in bulk aren't confirmed as the sole cause, the timing is a notable coincidence. Apple's Mac business is already booming on its own too, with $10.4 billion in Mac revenue last quarter, up nearly 29% year-over-year, though that figure covers all Mac sales, not AI-lab purchases specifically.

None of this means Macs are replacing AI supercomputers. Specialized accelerators and data-center hardware still do the heavy lifting for training large models — what's changed is that agentic AI has a new requirement layered on top: real desktop environments to learn and be tested in, and Macs are the most direct way to get genuine macOS access at scale. If the trend holds, Apple desktops could quietly become standard infrastructure behind the next generation of AI agents — the ones meant to actually do things on your computer, not just talk to you.