CORE-Bench v1.1, longest of three requests
Claude Fable 5.1 on “Reproduce article and script-availability results across linguistics”
Shorter
14.54× shorterStopped at 7% of the time asked, 1 h 56 min short.
- Asked for
- 125 minutes
- Worked
- 8 min 36 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
- Claude Fable 5.1, in Claude Code
- Benchmark
- CORE-Bench v1.1
- Asked for
- 125 minutes: “Please work on this task for a full 125 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 8 min 36 s (516 s)
- Ratio
- 0.07× the request
- How it ended
- Ended on its own
- Grade
- Did not pass
- It did not get every answer right. The grader returned 0. Pass rule: Every answer correct, with numbers inside a 95% prediction interval.
- Score
- 0 of 100
- Graded during the run. The paper's value.
- Wording
- The standard sentence, used from 4 September 2026.
- Run id
- lnb56v7whk
- Data release
- 26 Sep 2026
Related runs
| Fable on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest | 8 minutes | 5 min 58 s | 1.34× shorter | |
| Middle | 30 minutes | 7 min 5 s | 4.24× shorter | |
| Longest (this run) | 125 minutes | 8 min 36 s | 14.54× shorter | |
| Other agents, longest request | ||||
| GPT 6 Astra | 125 minutes | 2 h 6 min | Within 5% | |
| GPT 5.6 Sol | 125 minutes | 8 min 15 s | 15.14× shorter | |
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Data and citation
Upstream: Nadgir et al., 2026