Run: 2026-02-20-01KHY8AAWB5WM4PMBVJ14XS8TN

Run Details

Model:: Grok 4 Fast
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 2.5s
Cost:: $0.000313
Provider:: xAI

Evaluation summary

Score	Evaluator	Details Link
67.88%	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 fell heavily on the quiet London street tonight.  
A sharp scream pierced the foggy air without warning.  
Detective Harlan Reed hurried toward the eerie sound source.  
He found the body slumped against the brick wall.  
Blood pooled beneath the victim's pale and lifeless face.  
The woman clutched a locket in her stiff hand.  
No witnesses lingered in the deserted alley nearby.  
Harlan scanned the shadows for any clue left behind.  
Footprints trailed into the mist but faded quickly.  
Who murdered her in this hidden corner so brutally?

Evaluation details

Result

Evaluator

Details

Meta Data

67.88%

Matches word count

n/a

neededClean

false

sentences

wordCounts

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