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Opus-5

Every Claude 5 change that silently rewired my Claude Code setup

··1324 words·7 mins
The first sign that a model generation had turned over under my feet was a billing prompt that made no sense. I ran /model to switch back to Fable 5 and the CLI opened a browser tab telling me to set up usage credits, for a model my Max plan already includes. A full restart of Claude Code fixed it. That little glitch sent me digging, and what I found was a pile of changes, some breaking, some silent, scattered across at least five official pages. This is the consolidated list I wanted that week. 🧪 Tested with Claude Code 2.1.220 · macOS Eight weeks that rearranged the lineup # 06-09 Fable 5 ships