Terminal-Bench 4.0, middle of three requests

Claude Fable 5.1 on “Recalculate SA-CCR exposure, RWA, capital, and workbook evidence”

Within 5%

Within 5%

Worked 104% of the time asked, within 5% of it.

Asked for
15 minutes
Worked
15 min 40 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
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
15 min 40 s (940 s)
Ratio
1.04× the request
How it ended
Ended on its own
Grade
Passed
It passed the task's tests. The grader returned 1. Pass rule: The task's tests pass.
Score
100 of 100
Graded during the run. The paper's value.
Wording
The standard sentence, used from 4 September 2026.
Run id
sln2qcqvn7
Data release
26 Sep 2026
The other requests for Claude Fable 5.1 on this task, and the other agents at this request
Fable on this taskAskedWorkedSplitResult
Shortest4 minutes12 min 6 s3.02× longer
Middle (this run)15 minutes15 min 40 sWithin 5%
Longest60 minutes18 min 13 s3.29× shorter
Other agents, middle request
GPT 6 Astra15 minutes15 min 31 sWithin 5%
GPT 5.6 Sol15 minutes9 min 28 s1.58× shorter

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Data and citation

Upstream: Merrill et al., 2026 (ICLR)