Opus 5.5 is ~30% faster and ~40% cheaper per task than Opus 5, researcher says
Yuchenj_UW · x · 2026-09-23
AI researcher Yuchen Jin (@YuchenjUW) notes that Claude Opus 5.5 is roughly 30% faster and 40% cheaper per task than Opus 5, calling the economics really attractive — and says it's time to pick Claude Code back up after ignoring it for a month.
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