What is Grok 4 Heavy's performance on METR's task length evaluation?
4
125Ṁ81
2026
8%
0 to 1.5 Hours
15%
1.5 to 2 Hours
30%
2 to 2.5 Hours
33%
2.5 to 3 Hours
15%
More than 3 Hours

Resolves based on the METR's measurement of the duration of tasks that can complete with a 50% success rate.

https://metr.org/blog/2025-03-19-measuring-ai-ability-to-complete-long-tasks/

Grok 4 Market here:

https://manifold.markets/AffineTyped/what-is-grok-4s-performance-on-metr

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