NC Bench
Overview
About
Tests
Models
Model
GPT-4.1 Nano
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-14-01JRTSXENW8HP6CTTNTXXBQHT2
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 hammered softly against the grand Victorian mansion’s windows as Detective Harris arrived silently through the foggy, deserted driveway. Inside, the grand hall was dimly lit, with shattered porcelain scattered across the mahogany floor, hinting at a brutal struggle endured. Crimson pools stained the ornate Persian rug, revealing the victim’s desperate final moments before succumbing to unseen, deadly violence. Voices echoed from the grand staircase’s shadowed landing, as neighbors whispered rumors about the recent quarrels and hidden secrets. Detective Harris examined the bloodied dagger lying obliviously beside the victim, noting its intricate gold handle and suspiciously clean blade.
id
"gen-1744656317-bMVolnK8x1BHq3UXbMlI"
upstream_id
"chatcmpl-BMJ6278CYbUUYtxr40uKV4nFgmpgG"
total_cost
0.0000574
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:45:24.799712+00:00"
Monday, April 14th, 2025 at 6:45:24 PM GMT+00:00
model
"openai/gpt-4.1-nano-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
4881
moderation_latency
207
generation_time
1525
tokens_prompt
42
tokens_completion
132
native_tokens_prompt
42
native_tokens_completion
133
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
0.0000574
Evaluation details
Result
Evaluator
Details
Meta Data
76.3918%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
20
1
21
2
19
3
19
4
20