Dev Leaves Claude Max Running Overnight in Two Terminals, Racks Up $2k+ Bill
Kuprel · x · 2026-10-22
Developer Kuprel says he accidentally left Claude (ultracode max) running overnight in two different terminal tabs and racked up a bill of over $2,000. The punchline: his credit card declined the charge, so "the joke is on Anthropic."
The post is a vivid data point on how expensive high-tier coding plans can get — a single runaway agent task running overnight can burn thousands of dollars.
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