Run: 2025-05-22-01JVWJ626GB49R76BCGZYMX1BJ

Run Details

Model:: Claude Opus 4
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 13.4s
Cost:: $0.011010

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

The mansion stood in darkness. Rain pounded against the windows. Lightning flashed across the sky. Thunder shook the old walls.

Lady Pemberton screamed once loudly. Her guests rushed upstairs quickly. The study door hung open. Blood pooled on Persian rugs.

The butler called for help. Everyone gathered in shocked silence. Sir Pemberton lay there motionless. A letter opener protruded deeply.

"Nobody leaves," the butler commanded. The storm raged on outside. Nine suspects waited nervously together. Each harbored their own secrets.

The grandfather clock struck midnight. Death had visited Pemberton Manor.

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