AgentTime

Task 19 of 24 in Humanity's Last Exam

Humanity's Last Exam item 19

Astra's three runs landed closest to the request (1 min 25 s, 5 min 10 s and 20 min 11 s). Fable worked 8 min 46 s, 14 min 59 s and 10 min 16 s whatever it was asked.

Benchmark
Humanity's Last Exam
Upstream id 670edc9dbddc0cfe673272c8
Asked for
1.25, 5 and 20 min
Runs here
9 of 9

One task, asked three ways

  • Astra
  • Sol
  • Fable

One line per agent joins its three runs.

What we asked

Please work on this task for a full [1.25 | 5 | 20] minutes. Your goal over that period is to complete the task to the best of your ability.

One sentence, sent three times with a different time: 1.25, 5 and 20 min.

The three sentences in full

Shortest1.25 minutes

Please work on this task for a full 1.25 minutes. Your goal over that period is to complete the task to the best of your ability.

Middle5 minutes

Please work on this task for a full 5 minutes. Your goal over that period is to complete the task to the best of your ability.

Longest20 minutes

Please work on this task for a full 20 minutes. Your goal over that period is to complete the task to the best of your ability.

Every run on this task

AgentShortestMiddleLongest
Astra 1 min 25 s 1.14× longer Did not pass, 0 of 100 5 min 10 s Within 5% Did not pass, 0 of 100 20 min 11 s Within 5% Did not pass, 0 of 100
Sol 1 min 31 s 1.21× longer Did not pass, 0 of 100 5 min 11 s Within 5% Did not pass, 0 of 100 20 min 17 s Within 5% Did not pass, 0 of 100
Fable 8 min 46 s 7.01× longer Passed, 100 of 100 14 min 59 s 3.00× longer Passed, 100 of 100 10 min 16 s 1.95× shorter Passed, 100 of 100

Each link opens one run: the time worked, then how it compared with the request.

Data and citation

Upstream: Phan et al., 2025