Anthropic's new Opus 5.5 is going to cut a lot of AI coding bills by way more than the 20% price drop people are quoting today. That 20% is on regular tokens. When an AI agent works on your code, most of what you're paying for is the agent re-reading the same files again and again, before every single step it takes. That re-reading just got 60% cheaper. The model also needs fewer steps to finish things. One early tester had it fix up a 200,000 line codebase in under 3 hours, and the old Opus…