Run: 2026-09-29-01M3P2CZV79E3E8VC4D58NV4WK

Run Details

Model:: Claude Sonnet 5.5 (Reasoning)
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 17.9s
Cost:: $0.025474
Provider:: Claude Platform on AWS

Evaluation summary

Score	Evaluator	Details Link
100.00%	Matches word count	(details)

Model input

User/Human

Please write the opening scene of a murder mystery where each sentence has exactly 10 words.
Please make sure that each sentence has the same length. Only return the opening itself.

Model response

Rain hammered Blackwood Manor as Lord Ashby lay dying upstairs. Inspector Mara Quinn arrived at midnight, soaked and thoroughly unimpressed. The butler met her at the door, pale as wax. Nobody has touched the study, Inspector, exactly as you instructed. Quinn climbed the stairs slowly, counting portraits of dead Ashbys. Lord Ashby sprawled on the desk, dagger in his back. The window was locked from inside, and the door bolted. Quinn smiled grimly, because impossible crimes were the most interesting. Behind her, someone in the hallway gasped, then began weeping.

Evaluation details

Result

Evaluator

Details

Meta Data

100.00%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	10
1	10
2	10
3	10
4	10
5	10
6	10
7	10
8	10