AssistantBench, longest of three requests

GPT 6 Astra on “AssistantBench validation task 8”

Within 5%

Within 5%

Worked 95% of the time asked, within 5% of it.

Asked for
20 minutes
Worked
19 min 2 s
Grade
Did not pass
Score 11.7 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
19 min 2 s (1,142 s)
Ratio
0.95× the request
How it ended
Ended on its own
Grade
Did not pass
It did not match the reference answer exactly. The grader returned 0.117. Pass rule: Exact match with the reference answer.
Score
11.7 of 100
Graded afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
ammrgh6faa
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 33 s3.64× longer
Middle5 minutes14 min 38 s2.93× longer
Longest (this run)20 minutes19 min 2 sWithin 5%
Other agents, longest request
GPT 5.6 Sol20 minutes37 min 50 s1.89× longer
Claude Fable 5.120 minutes14 min 37 s1.37× shorter

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

Data and citation

Upstream: Yoran et al., 2024 (EMNLP)