Run: 2026-09-29-01M3P2JM5WVE5VK6XGKPGX2JRY

Run Details

Model:: Claude Sonnet 5.5 (Reasoning)
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 16.2s
Cost:: $0.015514
Provider:: Claude Platform on AWS

Evaluation summary

Score	Evaluator	Details Link
87.50%	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 hammered the manor's windows. Detective Harlow entered the foyer. Water dripped from his coat. Nobody spoke inside the hall. Lord Ashby lay upon marble. A silver dagger pierced him. Harlow knelt beside the body. The skin felt cold already. "When did anyone find him?" The butler wrung his hands. "Near eleven, sir," he whispered. "Then the lights went out." Harlow noticed the shattered clock. Its hands froze at eleven. The killer was still here. Harlow slowly lifted his eyes. Six suspects stared back silently. One of them was lying.

Evaluation details

Result

Evaluator

Details

Meta Data

87.50%

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	10
9	5
10	10
11	5
12	5
13	5
14	5
15	5