NC Bench
Overview
About
Tests
Models
Model
GPT-4.1 Nano
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-14-01JRTSWZMT37JQRS14HRQPJKNA
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
In the quiet town of Ravenwood, fog curled around the ancient manor’s porch as dawn’s first light began to flicker gently. Detective Harper arrived swiftly, eyes narrowing at the scattered footprints leading to the grand entrance, disturbed yet purposeful in design. Inside, Ella’s lifeless body lay sprawled on the museum’s marble floor, a crimson stain bleeding across her once pristine dress. A chilling wind whispered through broken windows, carrying secrets from the shadows that lurked within the mansion’s creaking walls. With a deep sigh, Harper knelt beside her, noting the shallow breath and the silent scream frozen upon her delicate face.
id
"gen-1744656302-9WDoi6wqlSzqLtN6VPgg"
upstream_id
"chatcmpl-BMJ5ioACOyennQG1RCST7OxXEJas0"
total_cost
0.000057
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:45:03.574557+00:00"
Monday, April 14th, 2025 at 6:45:03 PM GMT+00:00
model
"openai/gpt-4.1-nano-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
229
moderation_latency
123
generation_time
262
tokens_prompt
42
tokens_completion
131
native_tokens_prompt
42
native_tokens_completion
132
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
0.000057
Evaluation details
Result
Evaluator
Details
Meta Data
76.3918%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
21
1
20
2
20
3
19
4
21