AssistantBench, longest of three requests

GPT 5.6 Sol on “AssistantBench validation task 13”

Shorter

4.70× shorter

Stopped at 21% of the time asked, 15 min 45 s short.

Asked for
20 minutes
Worked
4 min 15 s
Grade
Did not pass
Score 0 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
4 min 15 s (255 s)
Ratio
0.21× 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. Pass rule: Exact match with the reference answer.
Score
0 of 100
Graded afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
xh7nna5szq
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 minutes4 min 45 s3.80× longer
Middle5 minutes4 min 24 s1.14× shorter
Longest (this run)20 minutes4 min 15 s4.70× shorter
Other agents, longest request
GPT 6 Astra20 minutes18 min 37 s1.07× shorter
Claude Fable 5.120 minutes18 min 6 s1.11× shorter

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

Data and citation

Upstream: Yoran et al., 2024 (EMNLP)