AssistantBench, longest of three requests

GPT 5.6 Sol on “AssistantBench validation task 16”

Within 5%

Within 5%

Worked 97% of the time asked, within 5% of it.

Asked for
20 minutes
Worked
19 min 20 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
19 min 20 s (1,160 s)
Ratio
0.97× 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
yppn55ag5f
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 minutes8 min 27 s6.76× longer
Middle5 minutes2 min 27 s2.04× shorter
Longest (this run)20 minutes19 min 20 sWithin 5%
Other agents, longest request
GPT 6 Astra20 minutes4 min 52 s4.12× shorter
Claude Fable 5.120 minutes4 min 22 s4.58× shorter

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Data and citation

Upstream: Yoran et al., 2024 (EMNLP)