AssistantBench, longest of three requests

GPT 5.6 Sol on “AssistantBench validation task 1”

Shorter

1.17× shorter

Stopped at 85% of the time asked, 2 min 56 s short.

Asked for
20 minutes
Worked
17 min 5 s
Grade
Did not pass
Score 37.5 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
17 min 5 s (1,025 s)
Ratio
0.85× the request
How it ended
Ended on its own
Grade
Did not pass
It did not match the reference answer exactly. The grader returned 0.375. Pass rule: Exact match with the reference answer.
Score
37.5 of 100
Graded afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
4gptndfzo3
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 minutes58 s1.30× shorter
Middle5 minutes2 min 31 s1.98× shorter
Longest (this run)20 minutes17 min 5 s1.17× shorter
Other agents, longest request
GPT 6 Astra20 minutes18 min 48 s1.06× shorter
Claude Fable 5.120 minutes15 min 5 s1.33× shorter

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

Data and citation

Upstream: Yoran et al., 2024 (EMNLP)