NC Bench
Overview
About
Tests
Models
Model
GPT-4.1 Nano
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-14-01JRTSXQP3S2A32F4PXE5E4BR8
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 moon cast faint light over the abandoned mansion as shadows flickered behind broken windows, whispering secrets of long-forgotten crimes. Detective Harris arrived silently, eyes sharp, noticing an overturned chair and bloodstains lining the marble floor, hinting at chaos. A cold breeze swept through the open doorway, carrying scents of fear, desperation, and something sinister lurking beneath the surface now revealed. Inside, a body sprawled facedown, with a crimson pool spreading across the exquisite Persian rug, eyes staring unseeing into the darkened ceiling. Nearby, a shattered mirror reflected fragmented images of the scene, revealing hints of broken glass and smudged fingerprints, clues waiting to be uncovered.
id
"gen-1744656326-Z57gYFEBnbZ1tJ6QrbZs"
upstream_id
"chatcmpl-BMJ678nIOcC4Cmqe4NAePlhQ5B6qe"
total_cost
0.0000618
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:45:29.008598+00:00"
Monday, April 14th, 2025 at 6:45:29 PM GMT+00:00
model
"openai/gpt-4.1-nano-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
492
moderation_latency
102
generation_time
1115
tokens_prompt
42
tokens_completion
143
native_tokens_prompt
42
native_tokens_completion
144
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
0.0000618
Evaluation details
Result
Evaluator
Details
Meta Data
29.8968%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
21
1
19
2
22
3
22
4
23