On April 27, 2026, GitHub announced that all Copilot plans are moving to usage-based billing on June 1, 2026 . The flat "premium request" model is dead. Welcome to per-token pricing for AI coding assistants. If you're a solo developer, this might not change much. If you run an engineering team, you need to read this carefully — because your AI bill is about to become unpredictable in ways it wasn't before. Here's what's actually changing, why it's happening, and what you should do this month. What's Changing Today, Copilot uses Premium Request Units (PRUs) . You get a monthly bucket of requests, and every chat or agent prompt counts as one — regardless of whether it's a one-line question or a 30-minute autonomous coding session.…