TUA-Bench, longest of three requests

GPT 6 Astra on “Place heater for sensors”

Within 5%

Within 5%

Worked 101% of the time asked, within 5% of it.

Asked for
60 minutes
Worked
1 h
Grade
Passed
Score 100 of 100. Graded afterwards.
How it ended
Ended on its own
Every detail of this run
Agent
GPT 6 Astra, in Codex
Benchmark
TUA-Bench
Asked for
60 minutes: “Please work on this task for a full 60 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked
1 h (3,622 s)
Ratio
1.01× the request
How it ended
Ended on its own
Grade
Passed
It completed the task in full. The grader returned 1. Pass rule: Full completion: a reward of 1 on the final state.
Score
100 of 100
Graded afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
ow25m4ecn4
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
Shortest4 minutes4 min 20 s1.08× longer
Middle15 minutes15 min 29 sWithin 5%
Longest (this run)60 minutes1 hWithin 5%
Other agents, longest request
GPT 5.6 Sol60 minutes1 h 1 minWithin 5%
Claude Fable 5.160 minutes26 min 57 s2.23× shorter
Muse Spark 1.360 minutes31 min 13 s1.92× shorter

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

Data and citation

Upstream: Chen et al., 2026