Run: 2025-05-22-01JVWMJFCX7Q92S1PVSP0EPV2M

Run Details

Model:: Claude Sonnet 4
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 5.7s
Cost:: $0.002667

Evaluation summary

Score	Evaluator	Details Link
90.76%	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 grand ballroom sparkled brilliantly tonight. Lady Pemberton adjusted her diamond necklace. Guests mingled beneath golden crystal chandeliers. Classical music filled the air. 

Lord Pemberton raised his champagne. "Welcome to our anniversary celebration!" Applause echoed throughout the room. The orchestra resumed their waltz.

Lady Pemberton excused herself quietly. She climbed the marble staircase. Her silk gown rustled softly. The second floor seemed empty.

A scream pierced the night. Guests rushed toward the sound. Lady Pemberton lay motionless below. Her necklace glittered beside her.

Detective Morrison arrived within minutes. He surveyed the crowded scene. "Nobody leaves until I'm finished."

Evaluation details

Result

Evaluator

Details

Meta Data

90.76%

Matches word count

n/a

neededClean

false

sentences

wordCounts

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