Run: 2026-06-01-01KT1G4N0VSKXXTR67XZT98DNQ

Run Details

Model:: Claude Opus 4.8 (Reasoning, Low)
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 21.3s
Cost:: $0.019275
Provider:: Amazon Bedrock

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 5 words.
Please make sure that each sentence has the same length. Only return the opening itself.

Model response

The rain fell that night.
Detective Sarah Cole arrived late.
The mansion loomed in darkness.
A body lay quite still.
Blood pooled across white marble.
Nobody had heard a sound.
The victim was clearly wealthy.
His eyes stared at nothing.
Sarah knelt beside the corpse.
Something felt deeply, terribly wrong.
The front door stood open.
No forced entry was visible.
Whoever killed him knew him.
She examined the cold hands.
A note crumpled within them.
Sarah carefully unfolded the paper.
Three words changed everything completely.
You are next, dear sister.
Sarah felt her blood freeze.

Evaluation details

Result

Evaluator

Details

Meta Data

100.00%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	5
1	5
2	5
3	5
4	5
5	5
6	5
7	5
8	5
9	5
10	5
11	5
12	5
13	5
14	5
15	5
16	5
17	5
18	5