ByteBrief
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Anthropic released Claude Opus 5 on July 24, pricing it at $5 per million input tokens, half the cost of Fable 5 and matching Opus 4.8. It scores 30.2% on the ARC-AGI-3 benchmark, nearly four times higher than GPT-5.6 Sol.
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Summary by ByteBrief
Grok 4.5 matches Opus at quarter tokens