What is Grok 4's performance on METR's task length evaluation?
11
125Ṁ654
2026
51%
0 to 1.5 Hours
32%
1.5 to 2 Hours
12%
2 to 2.5 Hours
4%
2.5 to 3 Hours
1.2%
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 Heavy does not count

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