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Artificial Analysis: Intelligence Index high rose from 17 to 58 in a year

Artificial Analysis

Artificial Analysis says its Intelligence Index versus cost-per-task Pareto frontier has changed significantly over the past 18 months.

One year ago, the highest-scoring model was GPT-5 mini (high), at 17 on v4.3 of the Intelligence Index and about $0.05 per task. As of last week, Claude Opus 5.5 set the highest score to date at 58 and about $5.98 per task.

#artificial-analysis#intelligence-index#claude-opus-5.5#gpt-5-mini

Artificial Analysis: GPT-6.1 Sol trails GPT-6 Astra by 1 point at under a quarter of the cost

Artificial Analysis says GPT-6.1 Sol replaces GPT-6 Sol after seven days, gains 4 Intelligence Index points on GPT-6 Sol, and costs $0.72 per task at max effort versus $3.26 for GPT-6 Astra. Its list price matches GPT-6 Sol at $2/$10 per million tokens, with the cache-read discount rising from 90% to 95%.