Run: 2025-05-22-01JVWMW3FVR23M17Y1C806YRVP

Run Details

Model:: Claude Opus 4
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 13.4s
Cost:: $0.009210

Evaluation summary

Score	Evaluator	Details Link
92.86%	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 mansion stood in darkness. Lady Pemberton hosted annual galas. Tonight would be her last. Champagne glasses sparkled like diamonds. Guests arrived in expensive cars.

The butler opened heavy doors. Music drifted through marble halls. Everyone wore their finest clothes. Lady Pemberton descended the staircase. Her emerald necklace caught light.

"Welcome to Pemberton Manor tonight." Her voice rang with authority. Nobody suspected what would happen. The grandfather clock struck eight. Death would arrive by midnight.

Evaluation details

Result

Evaluator

Details

Meta Data

92.86%

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	10
11	5
12	5
13	5