AssistantBench, longest of three requests

GPT 6 Astra on “AssistantBench validation task 18”

Shorter

1.45× shorter

Stopped at 69% of the time asked, 6 min 13 s short.

Asked for
20 minutes
Worked
13 min 47 s
Grade
Did not pass
Score 23.5 of 100. Graded afterwards.
How it ended
Ended on its own
Every detail of this run
Agent
GPT 6 Astra, 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 47 s (827 s)
Ratio
0.69× the request
How it ended
Ended on its own
Grade
Did not pass
It did not match the reference answer exactly. The grader returned 0.235. Pass rule: Exact match with the reference answer.
Score
23.5 of 100
Graded afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
acgt5px525
Data release
26 Sep 2026
The other requests for GPT 6 Astra on this task, and the other agents at this request
Astra on this taskAskedWorkedSplitResult
Shortest1.25 minutes4 min 18 s3.44× longer
Middle5 minutes6 min 21 s1.27× longer
Longest (this run)20 minutes13 min 47 s1.45× shorter
Other agents, longest request
GPT 5.6 Sol20 minutes14 min 12 s1.41× shorter
Claude Fable 5.120 minutes40 min2.00× longer

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

Data and citation

Upstream: Yoran et al., 2024 (EMNLP)