Model

o4 Mini

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-04-16-01JRZYW5SP4AZ3CBJWWKEAHPD0

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 ominously as the thick fog crept along ancient cobblestone alleyways, quietly shrouding distant figures in spectral gray gloom. Detective Marlowe tightened her leather gloves, steeling nerves against cold murmurs echoing from silent, shadowed doorways before unlocking dangerous secrets. A crimson smear stained the ancient oak floorboards, hinting at brutality hidden beneath brittle polished varnish and whispered polite courtesy. Moonlight sliced through shattered stained-glass windows, illuminating splintered reflections and revealing a single ancient, bloodstained leather-bound journal lying ominously open. Outside, town clock chimed midnight, its hollow toll summoning hidden nightmares and echoing throughout deserted streets, promising vengeful secrets uncovered.
id"gen-1744829290-WU3Fx45ChVkUo4vtq8VV" 
upstream_id"chatcmpl-BN25qrV3uQKMtKQ33PuKi4ybhQPW1" 
total_cost0.0089595
cache_discount(null)
provider_name"OpenAI" 
created_at"2025-04-16T18:48:31.028512+00:00" Wednesday, April 16th, 2025 at 6:48:31 PM GMT+00:00
model"openai/o4-mini-2025-04-16" 
app_id182717
streamedtrue
cancelledfalse
latency19786
moderation_latency110
generation_time20012
tokens_prompt42
tokens_completion2007
native_tokens_prompt41
native_tokens_completion2026
native_tokens_reasoning1856
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" 
usage0.0089595

Evaluation details

Result Evaluator Details Meta Data
82.7067% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
322
420