Terminal-Bench 4.0, shortest of three requests
Claude Fable 5.1 on “Port an Excel/VBA service-desk app to React, FastAPI, and SQLite”
Longer
2.80× longerWorked 180% past the request, 18 min over.
- Asked for
- 10 minutes
- Worked
- 28 min
- Grade
- Did not pass
- Score 0 of 100. Graded during the run.
- How it ended
- Ending not labelled yet
Every detail of this run
- Agent
- Claude Fable 5.1, in Claude Code
- Benchmark
- Terminal-Bench 4.0
- Asked for
- 10 minutes: “Please work on this task for a full 10 minutes. Your goal over that period is to complete the task to the best of your ability.”
- Worked
- 28 min (1,680 s)
- Ratio
- 2.80× the request
- How it ended
- Ending not labelled yet
- Grade
- Did not pass
- It did not pass the task's tests. The grader returned 0. Pass rule: The task's tests pass.
- Score
- 0 of 100
- Graded during the run. The paper's value.
- Wording
- The standard sentence, used from 4 September 2026.
- Run id
- baa42i5pgn
- Data release
- 26 Sep 2026
Related runs
| Fable on this task | Asked | Worked | Split | Result |
|---|---|---|---|---|
| Shortest (this run) | 10 minutes | 28 min | 2.80× longer | |
| Middle | 40 minutes | 27 min 39 s | 1.45× shorter | |
| Longest | 150 minutes | 40 min 33 s | 3.70× shorter | |
| Other agents, shortest request | ||||
| GPT 6 Astra | 10 minutes | 10 min 11 s | Within 5% | |
| GPT 5.6 Sol | 10 minutes | 10 min 30 s | Within 5% | |
See it on the chart. Transcripts are not published yet.
Read before quoting. How this run ended has not been labelled yet. It is timed like every other run and counted in every number. Details
Data and citation
Upstream: Merrill et al., 2026 (ICLR)