Run: 2026-02-24-01KJ8WVNPZ56N3WWMFR870QZ5Q

Run Details

Model:: Claude Opus 4.6 (Reasoning)
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 20.1s
Cost:: $0.018555
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 body lay face down.
Blood pooled on cold marble.
Detective Shaw entered the room.
Her eyes scanned the scene.
Nothing seemed out of place.
Yet someone had died here.
The mansion whispered dark secrets.
Rain hammered against tall windows.
A clock ticked on relentlessly.
She knelt beside the corpse.
The victim wore expensive clothes.
His face showed pure terror.
No weapon could be found.
This murder was carefully planned.
Shaw pulled out her notebook.
Tonight would be very long.

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