Run: 2026-10-09-01M4FYTW2F86V7BK1S3A592SAH

Run Details

Model:: Claude Haiku 5.5 (Reasoning, Low)
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 9.5s
Cost:: $0.000724
Provider:: Claude Platform on AWS

Evaluation summary

Score	Evaluator	Details Link
98.70%	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 fell on Blackwood Manor.
Detective Sarah Miles arrived late.
Lord Ashworth lay dead upstairs.
Nobody had touched anything yet.
Three suspects waited in silence.
Her gaze found the butler.
He trembled beside the fireplace.
Miles knelt over the body.
A bloodied letter lay underneath.
Its ink had not dried.
Someone had written it tonight.
The signature read simply: Margaret.
Margaret had died years ago.
Miles slowly lifted her gaze.
Every face turned toward her.
Nobody dared to speak.
Then the lights went out.

Evaluation details

Result

Evaluator

Details

Meta Data

98.70%

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	4
16	5