Model

o4 Mini

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-04-16-01JRZZFJA0JBK733NNQ54N4MGD

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Thunder rumbled through the deserted manor halls as Detective Marsh discovered crimson footprints leading toward the grand oak-paneled library doorway. Flickering candlelight revealed shattered glass and overturned chairs, evidence of a violent struggle echoing in cold, ancient ominous watchful silence. A solitary window cast pale moonlight upon a blood-spattered letter opener, its silver blade glinting with guilty, secret, ominous malice. Detective Marsh’s pulse quickened as distant footsteps approached, each echoing thud marking relentless pursuit of a cunning, shadowy unseen assailant. A single scream pierced midnight’s veil before abruptly cutting off, leaving only the detective’s breath reverberating in stifling, ominous darkness.
id"gen-1744829926-Y4IJhOaA26sd7qb0ajqO" 
upstream_id"chatcmpl-BN2G6rHNb2vu3L0AS7XexxPY2x0WY" 
total_cost0.0106139
cache_discount(null)
provider_name"OpenAI" 
created_at"2025-04-16T18:59:21.941803+00:00" Wednesday, April 16th, 2025 at 6:59:21 PM GMT+00:00
model"openai/o4-mini-2025-04-16" 
app_id182717
streamedtrue
cancelledfalse
latency33795
moderation_latency79
generation_time35150
tokens_prompt42
tokens_completion2383
native_tokens_prompt41
native_tokens_completion2402
native_tokens_reasoning2240
num_media_prompt(null)
num_media_completion(null)
num_search_results(null)
origin"https://ncbench.com/" 
is_byokfalse
finish_reason"stop" 
native_finish_reason"stop" 
usage0.0106139

Evaluation details

Result Evaluator Details Meta Data
84.2612% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
021
120
221
320
420