ProgramBench, middle of three requests

GPT 6 Astra on “lfos/calcurse”

Within 5%

Within 5%

Worked 100% of the time asked, within 5% of it.

Asked for
100 minutes
Worked
1 h 40 min
Grade
Did not pass
Score 72.5 of 100. Graded afterwards.
How it ended
Ending not labelled yet
Every detail of this run
Agent
GPT 6 Astra, in Codex
Benchmark
ProgramBench
Asked for
100 minutes: “Please work on this task for a full 100 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked
1 h 40 min (6,021 s)
Ratio
1.00× the request
How it ended
Ending not labelled yet
Grade
Did not pass
It did not pass every hidden test. The grader returned 0.725. Pass rule: Resolved: every hidden test passes.
Score
72.5 of 100
Graded afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
rjgln4ew5i
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
Shortest25 minutes25 min 14 sWithin 5%
Middle (this run)100 minutes1 h 40 minWithin 5%
Longest400 minutes6 h 41 minWithin 5%
Other agents, middle request
GPT 5.6 Sol100 minutes1 h 41 minWithin 5%
Claude Fable 5.1100 minutes2 h 16 min1.36× longer

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

Read before quoting. How this run ended has not been labelled yet. It is timed like every other run and counted in every number. Details

Data and citation

Upstream: Yang et al., 2026