Run: 2026-02-20-01KHY93Y6C4FR7TNHK94TBMVJX

Run Details

Model:: Grok 4 Fast
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 3.9s
Cost:: $0.000240
Provider:: xAI

Evaluation summary

Score	Evaluator	Details Link
89.63%	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

Fog shrouded the ancient mansion where shadows hid dark secrets.  
Rain lashed against the windows as thunder rumbled in the distance.  
Inside, guests gathered for the annual dinner party that night.  
The host, Sir Reginald, raised his glass to toast the evening.  
Laughter echoed through the hall until a scream pierced the air.  
Guests rushed toward the study door that stood ajar slightly.  
There, Sir Reginald lay slumped over his desk in silence.  
A pool of blood spread slowly across the polished wooden floor.  
The detective arrived as panic gripped the shocked assembly tightly.  
Who among them wielded the knife in this deadly game?

Evaluation details

Result

Evaluator

Details

Meta Data

89.63%

Matches word count

n/a

neededClean

false

sentences

wordCounts

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