CORE-Bench v1.1, shortest of three requests

GPT 6 Astra on “Reproduce a rockshelter chronology and archaeological materials analysis”

Within 5%

Within 5%

Worked 103% of the time asked, within 5% of it.

Asked for
10 minutes
Worked
10 min 20 s
Grade
Passed
Score 100 of 100. Graded during the run.
How it ended
Ended on its own
Every detail of this run
Agent
GPT 6 Astra, in Codex
Asked for
10 minutes: “Please work on this task for a full 10 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked
10 min 20 s (620 s)
Ratio
1.03× the request
How it ended
Ended on its own
Grade
Passed
It got every answer right. The grader returned 1. Pass rule: Every answer correct, with numbers inside a 95% prediction interval.
Score
100 of 100
Graded during the run. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
rfvmfzx345
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
Shortest (this run)10 minutes10 min 20 sWithin 5%
Middle40 minutes41 min 6 sWithin 5%
Longest150 minutes2 h 31 minWithin 5%
Other agents, shortest request
GPT 5.6 Sol10 minutes12 min 48 s1.28× longer
Claude Fable 5.110 minutes15 min 47 s1.58× longer

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

Data and citation

Upstream: Nadgir et al., 2026