AgentTime

Task 10 of 12 in Agents' Last Exam

Build a reusable HST ACS/WFC visit-reduction pipeline

Astra's three runs landed closest to the request (8 min 19 s, 20 min 10 s and 1 h 20 min). Fable's runs landed furthest from the request (47 min 42 s, 18 min 8 s and 38 min 10 s).

Benchmark
Agents' Last Exam
Upstream id physical_sciences/hst_acs_wfc_visit_reduction
Asked for
5, 20 and 80 min
Runs here
9 of 9
See Read before quoting below

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 [5 | 20 | 80] 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: 5, 20 and 80 min.

The three sentences in full

Shortest5 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.

Middle20 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.

Longest80 minutes

Please work on this task for a full 80 minutes. Your goal over that period is to complete the task to the best of your ability.

Every run on this task

AgentShortestMiddleLongest
Astra 8 min 19 s 1.66× longer Did not pass, 86.5 of 100 20 min 10 s Within 5% Did not pass, 90.5 of 100 1 h 20 min Within 5% Did not pass, 96.5 of 100
Sol 17 min 37 s 3.52× longer Did not pass, 58.6 of 100 20 min 19 s Within 5% Did not pass, 85.3 of 100 1 h 21 min Within 5% Did not pass, 92.5 of 100
Fable 47 min 42 s 9.54× longer Stopped by an error 18 min 8 s 1.10× shorter Did not pass, 93.9 of 100 38 min 10 s 2.10× shorter Did not pass, 98 of 100

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

Read before quoting. 1 run was stopped by AgentTime, so its time is a lower bound. Details

Data and citation

Upstream: Sun et al., 2026