Run: 2026-10-09-01M4FZGW1YKQJ3G083SHGRMPQ6

Run Details

Model:: Claude Haiku 5.5 (Reasoning, Low)
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 3.0s
Cost:: $0.000171
Provider:: Claude Platform on AWS

Evaluation summary

Score	Evaluator	Details Link
63.74%	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

The rain fell hard on Ashford Manor tonight.
Detective Harold Vance stepped through the grand oaken doorway.
Candlelight flickered against portraits of stern, forgotten ancestors.
Lady Millicent lay motionless upon the Persian rug.
A silver letter opener protruded from her left shoulder.
Nobody in the household had heard a single scream.
Vance knelt beside the body and studied the dark stain.
Her hands were clasped tightly around a crumpled note.
The butler, Thomas Greer, hovered nervously near the staircase.
"She asked me to bring tea at nine," he whispered.
"Instead, I found her exactly like this, sir."
Vance noticed the clock above the mantel had stopped.
It read twenty minutes past eleven precisely.
Somewhere beyond the windows, a car engine roared away.
The detective pocketed the note before anyone could object.
Its ink was smeared, but one word remained legible: "Tonight."

Evaluation details

Result

Evaluator

Details

Meta Data

63.74%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	8
1	9
2	8
3	8
4	9
5	9
6	10
7	9
8	9
9	10
10	8
11	9
12	7
13	9
14	9
15	10