NC Bench
Overview
About
Tests
Models
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
Messages
Meta
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_cost
0.0106139
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_id
182717
streamed
true
cancelled
false
latency
33795
moderation_latency
79
generation_time
35150
tokens_prompt
42
tokens_completion
2383
native_tokens_prompt
41
native_tokens_completion
2402
native_tokens_reasoning
2240
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
0.0106139
Evaluation details
Result
Evaluator
Details
Meta Data
84.2612%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
21
1
20
2
21
3
20
4
20