Opus 5 topped the intelligence ranking by a narrow margin, with per-single-task costs 26% lower than Fable 5

Crypto news: AI evaluation firm Artificial Analysis released Claude Opus 5’s results, scoring 61, narrowly ahead of Fable 5’s 60. GPT-5.6 SOL scored 59, and Kimi K3 scored 57. Opus 5’s average cost per task is $2.03, which is 26% lower than Fable 5’s $2.75. In two knowledge-work evaluations, gdpval-aa v2 and aa-briefcase, Opus 5 topped the charts, and with Claude Code it tied for first place in the programming Agent index. Terminal-bench v2.1 scored 89%, close to GPT-5.6 SOL. Opus 5’s hallucination rate in the aa-omniscience test rose to 50%, up 14 percentage points from Opus 4.8; the low-reasoning tier’s value for money still trails slightly behind the GPT-5.6 series.
SOL-2.66%
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