NC Bench
Overview
About
Tests
Models
Model
o4 Mini High
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-16-01JRZYYS9JF6MXCYM0JJM6G27B
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
Midnight rain fell in heavy sheets against the ancient manor’s windows, obscuring moonlight while eerie shadows danced across dust-covered floors. Detective Louisa Carver arrived silently, her footsteps echoing through the grand hall as lightning flickered across polished ancient marble columns. A single bloodstained glove lay abandoned on the oriental rug near the mahogany desk, its twin mysteriously vanished without trace. Sir Bennett Thurston’s lifeless body slumped against a velvet-covered chaise lounge, his face frozen in grim shock and silent accusation. Lady Clarissa’s trembling voice quivered from the library’s ornate stained-glass doorway, pleading innocence while fingernails bit into trembling pale knuckles. Detective Carver inhaled sharply, noting a shattered porcelain teacup on the floor’s edge, smelling bitter almonds mixed with spilled tea. She understood instantly that this was no accident; motive lurked behind every portrait and whispered secret in this cursed estate.
id
"gen-1744829376-BbJi3uawC8hXh2X1N0w8"
upstream_id
"chatcmpl-BN27EBmgVYqmNkNcWfgJZQsWRgIND"
total_cost
0.0161975
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-16T18:50:25.146699+00:00"
Wednesday, April 16th, 2025 at 6:50:25 PM GMT+00:00
model
"openai/o4-mini-high-2025-04-16"
app_id
182717
streamed
true
cancelled
false
latency
46068
moderation_latency
87
generation_time
48605
tokens_prompt
42
tokens_completion
3652
native_tokens_prompt
41
native_tokens_completion
3671
native_tokens_reasoning
3456
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
0.0161975
Evaluation details
Result
Evaluator
Details
Meta Data
83.1370%
Matches word count
n/a
neededClean
false
sentences
7
wordCounts
0
21
1
20
2
20
3
21
4
21
5
20
6
20