NC Bench
Overview
About
Tests
Models
Model
GPT-4.1 Nano
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-14-01JRTSW23HEVK6E0AHNSCJ4KY7
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
The rain pounded softly against the window as Detective Harper arrived at the eerie, abandoned mansion on foggy, deserted midnight streets. Inside, the chilling silence was broken only by distant thunder, revealing a scene of chaos and imminent danger in the dimly lit hall. A broken vase and scattered papers told silent stories of frantic struggle, while faint bloodstains marked the cold marble floor. Harper's eyes scanned the room carefully, noting every detail, suspecting the victim had fought hard before succumbing to deadly injuries. With hesitant steps, she approached the lifeless body sprawled nearby, observing the silent, tragic expression frozen on their face. The room's atmosphere thickened with secret shadows, whispering possibilities of hidden motives, unexplained motives, and lurking deadly truths concealed.
id
"gen-1744656272-uuWpTpE6YIzUddLHtCWJ"
upstream_id
"chatcmpl-BMJ5EmoQfaEw6zV3oARiT8t6bHzNl"
total_cost
0.000069
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:44:34.32729+00:00"
Monday, April 14th, 2025 at 6:44:34 PM GMT+00:00
model
"openai/gpt-4.1-nano-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
314
moderation_latency
118
generation_time
1519
tokens_prompt
42
tokens_completion
161
native_tokens_prompt
42
native_tokens_completion
162
native_tokens_reasoning
0
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
0.000069
Evaluation details
Result
Evaluator
Details
Meta Data
63.8450%
Matches word count
n/a
neededClean
false
sentences
6
wordCounts
0
21
1
23
2
20
3
20
4
19
5
19