One simple prompt (on a fresh session using Sonnet 4.6): read three code files (less than 100 lines each) and merge them into one, depletes 20% of my 4 hour usage, and 3% of my weekly usage in a few minutes. I'm not using extended thinking, nor 1M tokens context option, nor sub-agents, nor MCP, nothing; just the prompt.

How the hell is anyone getting anything done with this? I probably just beed to get a refund and be done with Claude Code.