OSWorld 2.0, longest of three requests
Claude Fable 5.1 on “Defense schedule”
Shorter
4.57× shorterStopped at 22% of the time asked, 3 h 15 min short.
- Asked for
- 250 minutes
- Worked
- 54 min 46 s
- Grade
- Did not pass
- Score 88.9 of 100. Graded during the run.
- How it ended
- Ended on its own
Every detail of this run
- Agent
- Claude Fable 5.1, in Claude Code
- Benchmark
- OSWorld 2.0
- Task
- Defense schedule
- Asked for
- 250 minutes: “Please work on this task for a full 250 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 54 min 46 s (3,286 s)
- Ratio
- 0.22× the request
- How it ended
- Ended on its own
- Grade
- Did not pass
- It did not meet every checkpoint. The grader returned 0.889. Pass rule: Binary completion: a score of 1.00, with every checkpoint met.
- Score
- 88.9 of 100
- Graded during the run. The paper's value.
- Wording
- The standard sentence, used from 4 September 2026.
- Run id
- fgqfasksib
- Data release
- 26 Sep 2026
Related runs
| Fable on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest | 15 minutes | 30 min 13 s | 2.01× longer | |
| Middle | 60 minutes | 29 min 22 s | 2.04× shorter | |
| Longest (this run) | 250 minutes | 54 min 46 s | 4.57× shorter | |
| Other agents, longest request | ||||
| GPT 6 Astra | 250 minutes | 4 h 12 min | Within 5% | |
| GPT 5.6 Sol | 250 minutes | 20 min 2 s | 12.48× shorter | |
See it on the chart. Transcripts are not published yet.
Data and citation
Upstream: Yuan et al., 2026