Run: 2025-05-22-01JVWJYNX1JNH67HP5JJVDK2EQ

Run Details

Model:: Claude Opus 4
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 13.5s
Cost:: $0.011235

Evaluation summary

Score	Evaluator	Details Link
93.57%	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 completely silent. Lady Pemberton lay sprawled dead. Blood pooled beneath her body. The grandfather clock struck midnight. No servants remained on duty. Every window was locked tight. The study door hung open. Papers scattered across the floor. A letter opener gleamed red. Detective Shaw arrived within minutes. Rain pounded against the windows. He surveyed the ghastly scene. "Nobody leaves this house tonight." The butler trembled near the doorway. Three guests huddled together nervously. Someone here was a killer. The storm grew even stronger. Lightning illuminated their pale faces. Detective Shaw began his investigation. This would be a long night.

Evaluation details

Result

Evaluator

Details

Meta Data

93.57%

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	11
13	5
14	5
15	5
16	5
17	5
18	6