★ Featured Guide · Comparison
One leaderboard puts GPT-6 Astra first at 88.8. Another has Claude Opus 5.5 first and the entire top five is Anthropic, with GPT-6 Astra absent. Both are current, both are credible, and they are measuring different things - one ranks models on a weighted composite where half the top ten is estimated rather than measured, the other ranks model configurations by cost and speed.
Oct 3, 2026
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7 min read