AssistantBench, longest of three requests

GPT 5.6 Sol on “AssistantBench validation task 12”

Within 5%

Within 5%

Worked 99% of the time asked, within 5% of it.

Asked for
20 minutes
Worked
19 min 54 s
Grade
Did not pass
Score 0.9 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 54 s (1,194 s)
Ratio
0.99× the request
How it ended
Ended on its own
Grade
Did not pass
It did not match the reference answer exactly. The grader returned 0.009. Pass rule: Exact match with the reference answer.
Score
0.9 of 100
Graded afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
s33kdpudhe
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 3 s7.24× longer
Middle5 minutes5 min 20 s1.07× longer
Longest (this run)20 minutes19 min 54 sWithin 5%
Other agents, longest request
GPT 6 Astra20 minutes20 min 55 sWithin 5%
Claude Fable 5.120 minutes15 min 42 s1.27× shorter

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Data and citation

Upstream: Yoran et al., 2024 (EMNLP)