Vals AI Crowns Claude Opus 5.5 King While MiMo Costs 100x Less

Five frontier model drops in a single week reshuffled the Vals Index leaderboard, with Claude Opus 5.5 taking the top spot and Xiaomi's MiMo closing the open-weight gap.

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2026-09-26 00:26 · AlphaSignal
Vals AI Crowns Claude Opus 5.5 King While MiMo Costs 100x Less

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