Model

o4 Mini

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-04-16-01JRZZ4HK9JNHWM9Y4RC2HY19E

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
Midnight shadows whispered across the abandoned manor grounds as Detective Hawthorne approached the creaking front door with cautious, steady determination. A distant thunderclap rattled broken windows while cold wind carried faint cries echoing down darkened hallways into the brooding silence. Inside the grand foyer, a shattered chandelier cast fragmented light upon the marble floor stained with fresh, ominous crimson droplets. Detective Hawthorne knelt beside a lifeless body draped across an oriental rug, fingers grazing a bloodied pocket watch ticking relentlessly. Moonlight slipped through broken panes, illuminating ghostly footprints trailing from spilled whiskey to a distant study door, ominously ajar, silent. A low sigh escaped Detective Hawthorne’s lips as he recognized the chilling signature left at every previous sinister crime scene.
id"gen-1744829565-A2KMwU6Xi5aub13KRKgJ" 
upstream_id"chatcmpl-BN2AHErjeoqRELK2vLW19QTb2vEK7" 
total_cost0.0126643
cache_discount(null)
provider_name"OpenAI" 
created_at"2025-04-16T18:53:10.465186+00:00" Wednesday, April 16th, 2025 at 6:53:10 PM GMT+00:00
model"openai/o4-mini-2025-04-16" 
app_id182717
streamedtrue
cancelledfalse
latency23695
moderation_latency133
generation_time24821
tokens_prompt42
tokens_completion2849
native_tokens_prompt41
native_tokens_completion2868
native_tokens_reasoning2688
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" 
usage0.0126643

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520