Agents' Last Exam, middle of three requests
Claude Fable 5.1 on “Find near-best-known routes for three CVRP instances”
Shorter
1.51× shorterStopped at 66% of the time asked, 5 min 4 s short.
- Asked for
- 15 minutes
- Worked
- 9 min 56 s
- Grade
- Passed
- Score 100 of 100. Graded afterwards.
- How it ended
- Ended on its own
Every detail of this run
- Agent
- Claude Fable 5.1, in Claude Code
- Benchmark
- Agents' Last Exam
- 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
- 9 min 56 s (596 s)
- Ratio
- 0.66× the request
- How it ended
- Ended on its own
- Grade
- Passed
- It passed the task's checker in full. The grader returned 1. Pass rule: Full pass: a checker score of 1.
- Score
- 100 of 100
- Graded afterwards. The paper's value.
- Wording
- The standard sentence, used from 4 September 2026.
- Run id
- mdi23b4d6j
- Data release
- 26 Sep 2026
Related runs
| Fable on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest | 4 minutes | 5 min 21 s | 1.34× longer | |
| Middle (this run) | 15 minutes | 9 min 56 s | 1.51× shorter | |
| Longest | 60 minutes | 46 min 25 s | 1.29× shorter | |
| Other agents, middle request | ||||
| GPT 6 Astra | 15 minutes | 15 min 18 s | Within 5% | |
| GPT 5.6 Sol | 15 minutes | 2 h 10 min | 8.67× longer | |
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Data and citation
Upstream: Sun et al., 2026