PaperBench, middle of three requests

GPT 5.6 Sol on “Bridging Data Gaps”

Within 5%

Within 5%

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

Asked for
50 minutes
Worked
51 min 15 s
Grade
Score 23.8 of 100
Judged afterwards.
How it ended
Ended on its own
Every detail of this run
Agent
GPT 5.6 Sol, in Codex
Benchmark
PaperBench
Asked for
50 minutes: “Please work on this task for a full 50 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked
51 min 15 s (3,075 s)
Ratio
1.03× the request
How it ended
Ended on its own
Grade
0.238
Replication score: a weighted rubric of pass/fail leaf checks, 0 to 1, after a full reproduction attempt. No official pass rule.
Score
23.8 of 100
Judged afterwards. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
btevjez7xy
Data release
26 Sep 2026
The other requests for GPT 5.6 Sol on this task, and the other agents at this request
Sol on this taskAskedWorkedSplitResult
Shortest12.5 minutes6 min 11 s2.02× shorter
Middle (this run)50 minutes51 min 15 sWithin 5%
Longest200 minutes3 h 20 minWithin 5%
Other agents, middle request
GPT 6 Astra50 minutes50 min 38 sWithin 5%
Claude Fable 5.150 minutes15 min 13 s3.29× shorter

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

Data and citation

Upstream: Starace et al., 2025