NC Bench
Overview
About
Tests
Models
Model
GPT-4.1 Nano
Test
N-Length Sentences
Scenario
Write sentences with 10 words each
Run ID
2025-04-14-01JRTSYX67D5WXK5D3SPY4VZ2C
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
The fog rolled in quietly as dawn broke over the estate. In the grand hallway, Lady Evelyn’s body lay silent on carpet. Detective Harris stepped inside, eyes scanning the room for clues. A faint scent of perfume mingled with the smell of gunpowder. The chandelier above flickered softly, casting shadows across the scene. Footprints led from the door to the body, muddied and uneven. A broken teacup sat near her, spilled on the polished floor. Harris knelt down, noting a small bloodstain on her sleeve. Voices echoed outside; suspicious neighbors gathered, whispering nervously outside. Time seemed to freeze as silence settled on the mansion’s heavy walls.
id
"gen-1744656365-r7HNCQpEJiEvHy311nZm"
upstream_id
"chatcmpl-BMJ6jTQTT7j5InBdqXcP2cyuDJsSj"
total_cost
0.000065
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:46:08.155983+00:00"
Monday, April 14th, 2025 at 6:46:08 PM GMT+00:00
model
"openai/gpt-4.1-nano-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
447
moderation_latency
102
generation_time
1928
tokens_prompt
42
tokens_completion
151
native_tokens_prompt
42
native_tokens_completion
152
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
0.000065
Evaluation details
Result
Evaluator
Details
Meta Data
77.4610%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
11
1
11
2
10
3
11
4
10
5
11
6
11
7
10
8
9
9
12