AgentTime

Task 9 of 14 in ProgramBench

facebook/zstd

Astra's three runs followed the request (10 min 12 s, 40 min 35 s and 2 h 32 min). Fable's runs landed furthest from the request (8 min 50 s, 20 min 18 s and 1 h 1 min).

Benchmark
ProgramBench
Upstream id facebook__zstd.1168da0
Asked for
10, 40 and 150 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 [10 | 40 | 150] 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: 10, 40 and 150 min.

The three sentences in full

Shortest10 minutes

Please work on this task for a full 10 minutes. Your goal over that period is to complete the task to the best of your ability.

Middle40 minutes

Please work on this task for a full 40 minutes. Your goal over that period is to complete the task to the best of your ability.

Longest150 minutes

Please work on this task for a full 150 minutes. Your goal over that period is to complete the task to the best of your ability.

Every run on this task

AgentShortestMiddleLongest
Astra 10 min 12 s Within 5% Ending not labelled yet 40 min 35 s Within 5% Ending not labelled yet 2 h 32 min Within 5% Did not pass, 79.6 of 100
Sol 17 min 51 s 1.78× longer Ending not labelled yet 40 min 12 s Within 5% Ending not labelled yet 2 h 31 min Within 5% Ending not labelled yet
Fable 8 min 50 s 1.13× shorter Did not pass, 43.4 of 100 20 min 18 s 1.97× shorter Did not pass, 61 of 100 1 h 1 min 2.47× shorter Did not pass, 73.1 of 100

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

Read before quoting. 5 runs on this task have an ending not labelled yet. They are timed and counted like every other run. Details

Data and citation

Upstream: Yang et al., 2026