Run: 2025-04-14-01JRTSQR6PAFMKH7W9H60GK9XK

Run Details

Model:: GPT-4.1 Mini
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 1.9s
Cost:: $0.000239
Provider:: OpenAI

Evaluation summary

Score	Evaluator	Details Link
94.82%	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 settled thickly over the silent, deserted mansion grounds.  
Detective Marla stepped cautiously through the creaking, ancient wooden door.  
A cold draft whispered secrets from shadows in every corner.  
Blood pooled beneath the shattered vase near the grand staircase.  
Footsteps echoed suddenly, breaking the eerie, heavy midnight calm.  
Marla searched for clues, eyes sharp under flickering chandelier light.  
A single pearl earring lay glinting beside the victim’s hand.  
Whispers of betrayal filled the room with unseen tension.  
Outside, the storm raged, trapping everyone within the house walls.  
The murder mystery had begun, with no one yet speaking.

Evaluation details

Result

Evaluator

Details

Meta Data

94.82%

Matches word count

n/a

neededClean

false

sentences

wordCounts

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

id	"gen-1744656130-Jly3BnRYfMAsjLb5H9zC"
upstream_id	"chatcmpl-BMJ2wg9OZGMQJNed5k7DNuITttwxN"
total_cost	0.0002392
cache_discount	(null)
provider_name	"OpenAI"
created_at	"2025-04-14T18:42:12.614463+00:00" 4/14/2025, 6:42:12 PM
model	"openai/gpt-4.1-mini-2025-04-14"
app_id	182717
streamed	true
cancelled	false
latency	385
moderation_latency	93
generation_time	879
tokens_prompt	42
tokens_completion	138
native_tokens_prompt	42
native_tokens_completion	139
native_tokens_reasoning	0
num_media_prompt	(null)
num_media_completion	(null)
num_search_results	(null)
origin	"https://ncbench.com/"
is_byok	false
finish_reason	"stop"
native_finish_reason	"stop"
usage	0.0002392