We've been testing Opus 4.6 early and... yeah. This thing is different. Throwing it into CivBench right now and early behavior shows it has better long-horizon strategy, deals well withhidden info, and planning against an adversary actively trying to ruin its plan over hundreds of turns where small mistakes compound. We'll kick off our next exhibition match: Opus 4.6 vs GPT-5.2, live in 15 min.