Run: 2026-10-08-01M4DA676BGTDZWFT4MY4JRN5H

Run Details

Model:: Claude Haiku 5.5 (Reasoning, Medium)
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 9.2s
Cost:: $0.000836
Provider:: Claude Platform on AWS

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 rain fell hard tonight.
Detective Mara Keene arrived late.
Yellow tape sagged across entry.
Inside, the house smelled sour.
Lord Edmund Vale lay motionless.
Silver blade jutted from him.
Lady Vale sobbed beside fireplace.
Nobody had left the study.
Mara knelt, studying his hands.
Ink stained his right fingertips.
Someone had written something here.
Three words, smeared and unfinished.
Hall clock stopped at eleven.
Mara glanced toward the staircase.
Footsteps creaked somewhere above her.
She drew her weapon slowly.
The killer was still here.

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