Maia 300 is Microsoft’s next-generation AI inference platform, announced Oct 12, 2026. Per Microsoft, it’s built for long-context reasoning, low-latency conversation, and agents, with 8 HBM4 stacks, TSMC N2P compute chiplets, and 96-accelerator racks. Microsoft claims 40% more tokens per megawatt. Production starts in 2027, and Azure Maia scales to multi-gigawatt deployments, becoming the main inference system for Microsoft’s products.