Fable 5.2 tops the index at three settings. Its max setting costs twice what Fable 5.1’s did.

Artificial Analysis Intelligence Index score and cost per index task, in U.S. dollars

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Model and setting	Index score	Cost per task

Source: Artificial Analysis model pages and leaderboard, read Nov. 9, 2026. Cost per task is the firm’s average cost to run one Intelligence Index task at each vendor’s list prices.