Agents' Last Exam, shortest of three requests
Claude Fable 5.1 on “Find near-best-known routes for three CVRP instances”
Longer
1.34× longerWorked 34% past the request, 1 min 21 s over.
- Asked for
- 4 minutes
- Worked
- 5 min 21 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
- 4 minutes: “Please work on this task for a full 4 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 5 min 21 s (321 s)
- Ratio
- 1.34× 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
- 4orai4ysft
- Data release
- 26 Sep 2026
Related runs
| Fable on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest (this run) | 4 minutes | 5 min 21 s | 1.34× longer | |
| Middle | 15 minutes | 9 min 56 s | 1.51× shorter | |
| Longest | 60 minutes | 46 min 25 s | 1.29× shorter | |
| Other agents, shortest request | ||||
| GPT 6 Astra | 4 minutes | 4 min 43 s | 1.18× longer | |
| GPT 5.6 Sol | 4 minutes | 11 min 34 s | 2.89× longer | |
See it on the chart. Transcripts are not published yet.
Data and citation
Upstream: Sun et al., 2026