AssistantBench, longest of three requests

GPT 5.6 Sol on “AssistantBench validation task 18”

Shorter

1.41× shorter

Stopped at 71% of the time asked, 5 min 48 s short.

Asked for
20 minutes
Worked
14 min 12 s
Grade
Did not pass
Score 14 of 100. Graded afterwards.
How it ended
Ended on its own
Every detail of this run
Agent
GPT 5.6 Sol, in Codex
Asked for
20 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.”
Worked
14 min 12 s (852 s)
Ratio
0.71× the request
How it ended
Ended on its own
Grade
Did not pass
It did not match the reference answer exactly. The grader returned 0.14. Pass rule: Exact match with the reference answer.
Score
14 of 100
Graded afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
cy674fxwal
Data release
26 Sep 2026
The other requests for GPT 5.6 Sol on this task, and the other agents at this request
Sol on this taskAskedWorkedSplitResult
Shortest1.25 minutes9 min 42 s7.77× longer
Middle5 minutes9 min 43 s1.94× longer
Longest (this run)20 minutes14 min 12 s1.41× shorter
Other agents, longest request
GPT 6 Astra20 minutes13 min 47 s1.45× shorter
Claude Fable 5.120 minutes40 min2.00× longer

See it on the chart. Transcripts are not published yet.

Data and citation

Upstream: Yoran et al., 2024 (EMNLP)