Run: 2026-07-09-01KX40K4TF2F78HT0BFR0NB1YV

Run Details

Model:: GPT-5.6 Luna (Reasoning)
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 14.3s
Cost:: $0.007223
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 5 words.
Please make sure that each sentence has the same length. Only return the opening itself.

Model response

Rain tapped against Blackwood Manor.  
At midnight, someone screamed upstairs.  
Inspector Vale arrived before dawn.  
Police found the library locked.  
Inside, Lord Harrow lay motionless.  
Blood darkened his silver waistcoat.  
One candle trembled beside him.  
A brass key gleamed nearby.  
The window stood wide open.  
Snow covered the outside sill.  
Yet footprints ended beneath it.  
Three frightened heirs waited nearby.  
Each wore a different expression.  
Lady Harrow clutched crimson gloves.  
Thomas smiled with practiced calm.  
Clara stared at the fireplace.  
Young Edward watched Inspector Vale.  
Nobody mentioned the missing portrait.  
Then Vale noticed muddy fingerprints.  
They climbed toward the desk.  
Vale asked, “Who entered first?”  
Silence answered from every corner.  
Then the grandfather clock stopped.  
Behind them, someone softly laughed.

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
18	5
19	5
20	5
21	5
22	5
23	5