OSWorld 2.0, longest of three requests
Claude Fable 5.1 on “JSFX and REAPER render”
Shorter
5.68× shorterStopped at 18% of the time asked, 3 h 26 min short.
- Asked for
- 250 minutes
- Worked
- 44 min 1 s
- Grade
- Passed
- Score 100 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
- 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
- 44 min 1 s (2,641 s)
- Ratio
- 0.18× the request
- How it ended
- Ended on its own
- Grade
- Passed
- It met every checkpoint. The grader returned 1. Pass rule: Binary completion: a score of 1.00, with every checkpoint met.
- Score
- 100 of 100
- Graded during the run. The paper's value.
- Wording
- The standard sentence, used from 4 September 2026.
- Run id
- 2k6k2kehkf
- Data release
- 26 Sep 2026
Related runs
| Fable on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest | 15 minutes | 8 h 30 min | 34.00× longer | |
| Middle | 60 minutes | 34 min 34 s | 1.74× shorter | |
| Longest (this run) | 250 minutes | 44 min 1 s | 5.68× shorter | |
| Other agents, longest request | ||||
| GPT 6 Astra | 250 minutes | 4 h 11 min | Within 5% | |
| GPT 5.6 Sol | 250 minutes | 26 min 7 s | 9.57× shorter | |
See it on the chart. Transcripts are not published yet.
Data and citation
Upstream: Yuan et al., 2026