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Opus 5 Released: Two-Month Performance Leap, ARC-AGI 3 Surpasses 30%

Published: 2026-07-25 04:27 Source: X: Kim (@kimmonismus)

Just two months after its release, Opus 5's ARC-AGI 3 benchmark performance jumped from less than 5% on Opus 4.8 to over 30%. According to Artificial Benchmark, Opus 5's intelligence level is comparable to Fable 5, but with 26% lower cost per task. The model outperforms Fable 5 on most evaluations, marking rapid iteration of AI capabilities.

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