21 Oct 2026 · Claude Opus 5.5
What it means for you
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In the 21 Oct 2026 snapshot the Intelligence Index (индекс на интелекта) is 58 points, Cost per task (цена на задача) is 5.98 USD, Output speed (скорост на изход) is 95 tokens per second, and the LMArena text rating (Elo) is 1509.