Run: 2026-07-01-01KWE9YTQ11KYMTA5RRCSJFNRZ

Run Details

Model:: Claude Sonnet 5 (Reasoning)
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 9.8s
Cost:: $0.007000
Provider:: Amazon Bedrock

Evaluation summary

Score	Evaluator	Details Link
98.62%	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

Rain fell hard on Mapleford.
The old mansion stood silent.
Lights flickered behind heavy curtains.
Inside, a woman lay still.
Blood pooled across the floor.
Detective Hale stepped in carefully.
He studied the shattered window.
Something felt deeply, terribly wrong.
The old clock had stopped.
Someone had planned this carefully.
Hale knelt beside the body.
Her eyes stared at nothing.
Near her hand lay a note.
It read: “Forgive me, please.”
Hale frowned, sensing a trap.
Somewhere close, the killer watched.

Evaluation details

Result

Evaluator

Details

Meta Data

98.62%

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	6
13	5
14	5
15	5