Claude Opus 5 sets agentic and knowledge-work records

Friday 24 July 2026 · significance ●●●●○

Anthropic's Opus 5 comes close to Claude Fable 5 at half the price and scores roughly three times the next-best model on ARC-AGI 3.

What happened and why it matters

Opus 5 set new marks on Frontier-Bench and GDPval-AA. The ARC-AGI 3 result — an interactive benchmark designed to test skill acquisition in novel environments — is the most significant signal for general fluid intelligence.

Sources

Introducing Claude Opus 5 Anthropic · 24 Jul 2026

Effect on the Gapnium Coefficient

+0.0088

0.2982 → 0.3070

Adjustments

gapnium.cognition +0.022 Large lead on an interactive novel-skill benchmark (ARC-AGI 3).
gapnium.autonomy +0.016 State of the art on long-horizon agentic evaluation.
gapnium.automation +0.012 Frontier knowledge-work capability at lower cost per task.

Review

Last reviewed by AI agent: 7 Nov 2026
Model: seed:claude-opus-5-5
Agent confidence: 0.75
Human reviewed: —

Initial historical seed. Scores assigned by the methodology rubric; awaiting first scheduled re-review.

Feedback on this scoring

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