Run: 2026-04-24-01KQ0G01D142KYXG6S25STKXR2

Run Details

Model:: Claude Opus 4.7 (Reasoning)
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 4.0s
Cost:: $0.006850
Provider:: Amazon Bedrock

Evaluation summary

Score	Evaluator	Details Link
89.57%	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

Rain lashed the old manor. Inside, the grandfather clock chimed. Eleanor poured another glass slowly. Her guests had arrived late. Thunder rattled the tall windows. Candles flickered across the table. Six people sat in silence. Each harbored a dark secret. Eleanor smiled without real warmth. "Someone here will die tonight." Nobody laughed at her joke. The lights suddenly went out. A scream pierced the darkness. Glass shattered against the floor. When the lights returned, Eleanor lay still. Blood pooled beneath her head. Her eyes stared at nothing. The front door stood locked. No one had come inside. The killer sat among them.

Evaluation details

Result

Evaluator

Details

Meta Data

89.57%

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	10
10	5
11	5
12	5
13	7
14	5
15	5
16	5
17	5
18	5