A Coding Agent Burns 600x a Chat Prompt
Climate scientist Zeke Hausfather logged eight weeks of his own Claude Code use -- 1,138 prompts, 14,000 model calls, 3.2 billion tokens, about 170 kWh -- roughly 150 Wh a prompt against Google's published 0.24 Wh median, though the conversion to electricity is his estimate with a 70-330 kWh range.