Did Grok 4.5 actually beat Claude Opus in independent testing?
Not outright. Grok 4.5 ranked fourth on the Artificial Analysis Intelligence Index — ahead of every open-weight model and all Gemini models — but still behind the top proprietary tier, even as Elon Musk called it an 'Opus-class model, but faster, more token-efficient and lower cost.'
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Grok 4.5 Ships, xAI Calls It Opus-Class at a Third of the PricexAI's Grok 4.5 prices coding at $2/$6 per million tokens, undercutting the $5/$25 Musk quoted for Opus 4.7 — but the AA Index ranks it behind Opus 4.8.
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