Run: 2026-02-20-01KHY8YYA6EWCJDGE5KET2F59Z

Run Details

Model:: Grok 4 Fast
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 2.3s
Cost:: $0.000216
Provider:: xAI

Evaluation summary

Score	Evaluator	Details Link
90.28%	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 fog wrapped the lonely manor house in eerie silence.  
A single scream shattered the night's deceptive calm abruptly.  
Guests froze in the candlelit dining room's opulent grandeur.  
Lord Harrington slumped forward in his ornate high-backed chair.  
A crimson stain spread across his crisp white evening shirt.  
The silver knife beside his plate gleamed with fresh blood.  
Panic rippled through the assembled family and close-knit friends.  
Detective Ellis arrived swiftly under the stormy midnight skies.

Evaluation details

Result

Evaluator

Details

Meta Data

90.28%

Matches word count

n/a

neededClean

false

sentences

wordCounts

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