Study: Frontier AI Time Horizon Reaches 14 Hours at 50M Token Window
tomekkorbak · x · 2026-07-03
The AI Safety Institute found that the time horizon of frontier AI evaluated under a 50M token context window is about 60% shorter than under a 2.5M token window. Specific data: The frontier time horizon is 2 hours under the 2.5M token window, and 14 hours under the 50M token window.
This finding indicates that the true trends of AI capabilities can only be observed when given a sufficiently large context budget—the choice of evaluation window fundamentally affects the conclusions drawn about the frontier level of AI.
Related event: Frontier AI Task Duration Doubles, Slowed by Budget Constraints(3 posts)→
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