Fable 5 AI Model Builds Bootable Windows Kernel in Rust in Just 38 Minutes

A newly released AI model, Claude Fable 5, autonomously generated a bootable Windows NT-style kernel in Rust in about 38 minutes, producing ~5,100 lines across multiple files and implementing core subsystems (scheduler, memory manager, interrupt handling, object and I/O managers). The kernel booted in QEMU, passed self-tests, and the model demonstrated the ability to identify and fix concurrency and IRQL issues; the report highlights potential uses for testing and malware analysis while emphasizing the verification and security risks of AI-generated low-level code.