AssistantBench, longest of three requests

GPT 5.6 Sol on “AssistantBench validation task 14”

Shorter

1.48× shorter

Stopped at 68% of the time asked, 6 min 30 s short.

Asked for
20 minutes
Worked
13 min 30 s
Grade
Did not pass
Score 4.7 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
13 min 30 s (810 s)
Ratio
0.68× the request
How it ended
Ended on its own
Grade
Did not pass
It did not match the reference answer exactly. The grader returned 0.047. Pass rule: Exact match with the reference answer.
Score
4.7 of 100
Graded afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
2gay5dzyxz
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 minutes15 min 5 s12.07× longer
Middle5 minutes12 min 10 s2.43× longer
Longest (this run)20 minutes13 min 30 s1.48× shorter
Other agents, longest request
GPT 6 Astra20 minutes6 min 56 s2.88× shorter
Claude Fable 5.120 minutes4 min 40 s4.28× shorter

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

Data and citation

Upstream: Yoran et al., 2024 (EMNLP)