NC Bench
Overview
About
Tests
Models
Model
o4 Mini High
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-16-01JRZZ8Q5KMF80B0QK7DEXT02M
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
A solitary thunderclap shattered midnight silence while flickering candles cast dancing shadows across the grand foyer’s antique elegant marble floor. A figure lay motionless at the base of an ornate stairwell stained crimson deeply by viscous, ominous droplets of blood. Detective Marlowe exhaled a long, smoky breath beneath his wide-brimmed fedora while surveying the gruesome tableau with silent, icy determination. A chorus of whispers echoed through moonlit corridors as anxious guests huddled behind closed doors, fearing hidden murderer among them. Somebody’s desperate scream still resonated eerily inside ancient walls, promising that tonight’s silence would suddenly break in bloody, unforgiving revelation.
id
"gen-1744829701-kk0muj9ozErq3oCNpY1S"
upstream_id
"chatcmpl-BN2CTgNWQNzfKL53HBbn3dHOzsT08"
total_cost
0.0164967
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-16T18:55:39.367263+00:00"
Wednesday, April 16th, 2025 at 6:55:39 PM GMT+00:00
model
"openai/o4-mini-high-2025-04-16"
app_id
182717
streamed
true
cancelled
false
latency
36161
moderation_latency
97
generation_time
37463
tokens_prompt
42
tokens_completion
3720
native_tokens_prompt
41
native_tokens_completion
3739
native_tokens_reasoning
3584
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
0.0164967
Evaluation details
Result
Evaluator
Details
Meta Data
92.1306%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
20
1
20
2
21
3
20
4
20