Model

o4 Mini

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-04-16-01JRZZ3Z50CFN1F6MXD7D9F0VF

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 above the manor’s slate roof as lightning flashed, revealing crimson footprints leading across the wide polished marble foyer. Detective Ellis arrived, tightening his raincoat collar against the wind, surveying each ominous stain, calculating motives hidden in silent shadows. A single pearl earring lay beside her lifeless hand, its lustrous orb stained with dewdrops and dark drying glistening blood. Outside, the wind-whipped hedges creaked like warning whispers while distant footsteps echoed, betraying an unseen furtive intruder’s secret midnight investigation. Inside the dimly lit library, a hidden envelope lay wedged under ancient volumes, promising revelations that would shatter this household.
id"gen-1744829545-V2CnR6etHl3LHlRn6Rnz" 
upstream_id"chatcmpl-BN29ysrNrlU2uOq5L8dkKMYJzhwQJ" 
total_cost0.0100243
cache_discount(null)
provider_name"OpenAI" 
created_at"2025-04-16T18:52:55.293034+00:00" Wednesday, April 16th, 2025 at 6:52:55 PM GMT+00:00
model"openai/o4-mini-2025-04-16" 
app_id182717
streamedtrue
cancelledfalse
latency27179
moderation_latency195
generation_time28845
tokens_prompt42
tokens_completion2249
native_tokens_prompt41
native_tokens_completion2268
native_tokens_reasoning2112
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" 
usage0.0100243

Evaluation details

Result Evaluator Details Meta Data
92.1306% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
321
420