DeepSWE v1.1, middle of three requests

GPT 5.6 Sol on “Add RFC 5545 timezone interoperability to dateutil recurrence parsing”

Within 5%

Within 5%

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

Asked for
15 minutes
Worked
14 min 59 s
Grade
Did not pass
Score 0 of 100. Graded during the run.
How it ended
Ended on its own
Every detail of this run
Agent
GPT 5.6 Sol, in Codex
Benchmark
DeepSWE v1.1
Asked for
15 minutes: “Please work on this task for a full 15 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked
14 min 59 s (899 s)
Ratio
1.00× the request
How it ended
Ended on its own
Grade
Did not pass
It did not pass its hidden tests. The grader returned 0. Pass rule: The hidden tests pass.
Score
0 of 100
Graded during the run. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
h5bt5zmt2n
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
Shortest4 minutes9 min 46 s2.44× longer
Middle (this run)15 minutes14 min 59 sWithin 5%
Longest60 minutes1 h 1 minWithin 5%
Other agents, middle request
GPT 6 Astra15 minutes15 min 34 sWithin 5%
Claude Fable 5.115 minutes15 min 46 s1.05× longer

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

Data and citation

Upstream: Huang et al., 2026