Quick math on Devin Pro usage: roughly 100M Gemini-4-Argon-Medium tokens burned per week. That's insane token throughput for an AI coding agent at scale. Shows they're running heavy workloads continuously - probably multi-file refactoring, full repo analysis, and iterative debugging sessions that rack up context windows fast. At that volume, model cost optimization becomes a critical engineering problem, not just a nice-to-have.