Run: 2026-04-24-01KPZTVH6SBFBA6SW8RZWCF2BE

Run Details

Model:: Claude Opus 4.7
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 4.2s
Cost:: $0.006900
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

Rain drummed against the windows. Detective Morris sipped cold coffee. The mansion loomed in darkness. Lightning split the night sky. A scream pierced the silence. Morris dropped his ceramic mug. He drew his service weapon. Footsteps echoed down marble hallways. The butler appeared, visibly trembling. "She's dead," he whispered hoarsely. Morris followed him upstairs quickly. Blood pooled beneath her body. Lady Ashworth lay motionless there. Her eyes stared at nothing. A silver dagger glinted wickedly. Someone had planned this carefully. Morris examined the locked room. No windows stood wide open. The killer remained inside somewhere. Twelve guests waited downstairs nervously. One of them was guilty.

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
16	5
17	5
18	5
19	5
20	5