Run: 2026-03-09-01KK9QGG8RWT3VPG83KMV4WTG1

Run Details

Model:: GPT-5.4 (Reasoning)
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 14.6s
Cost:: $0.012403
Provider:: OpenAI

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 10 words.
Please make sure that each sentence has the same length. Only return the opening itself.

Model response

Rain polished the mansion windows while thunder rehearsed its accusations.
Inside, candlelight trembled across portraits with eyes too knowing tonight.
Guests whispered politely, hiding old grudges beneath funeral-black silk gloves.
At midnight, the clock struck, and someone answered with screaming.
When silence returned, Lord Hatherleigh lay facedown beside the piano.
A silver letter opener glittered nearby, innocent as frozen moonlight.
No window stood open, yet wet footprints crossed the marble.
Detective Mara Vale removed her gloves and counted everyone's breaths.
Nine breaths shivered; the last belonged to the murdered lord.
Mara frowned, because dead men, tonight, should have counted zero.

Evaluation details

Result

Evaluator

Details

Meta Data

100.00%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	10
1	10
2	10
3	10
4	10
5	10
6	10
7	10
8	10
9	10