Run: 2026-03-18-01KM09N9BH1WPJF6509D8NRVFQ

Run Details

Model:: GPT-5.4 Nano
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 1.5s
Cost:: $0.000197
Provider:: OpenAI

Evaluation summary

Score	Evaluator	Details Link
87.04%	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

The rain tapped windows as midnight settled over quiet Harrowgate Manor.  
Guests gathered for dinner, smiling, yet watching the host warily.  
Sir Alden lifted his glass, claiming joy filled every corridor tonight.  
Then a scream shattered silence, echoing through the grand hallway.  
Dr. Lyle arrived first, kneeling beside a fallen velvet chair.  
The body lay sprawled, still dressed in ceremonial crimson waistcoat.  
Candles flickered wildly, casting shadows like accusing silhouettes everywhere.  
Inspector Mara Quinn noted the doors were locked from inside.  
A jeweled dagger rested near Alden's hand, strangely unbloodied.  
From the foyer, a maid whispered, naming three trembling witnesses present.

Evaluation details

Result

Evaluator

Details

Meta Data

87.04%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	11
1	10
2	11
3	10
4	10
5	10
6	9
7	10
8	9
9	11