NC Bench
Overview
About
Tests
Models
Model
GPT-4.1 Nano
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-14-01JRTSYZKAYE8F8HPJ6AHMT9XX
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 library’s stained glass windows as shadows moved silently across ancient leather-bound bookshelves. A cold breeze slipped through the cracked door, carrying whispers of secrets long buried beneath dust-covered pages and forgotten memories. Detective Harper arrived promptly, eyes sharp and focused, sensing that tonight’s tranquility concealed a dark, violent truth awaiting discovery quietly. In the dim candlelight, a figure sprawled on the marble floor, blood pooling beneath, eyes wide with shock and silent screams. Nearby, a shattered teacup lay abandoned, scattered porcelain and scattered pages hinting at a struggle before the deadly assault.
id
"gen-1744656367-Kb97ttDapZt4vxuN7pZY"
upstream_id
"chatcmpl-BMJ6lPlpaO7myUBNtbsZEynanmke9"
total_cost
0.0000558
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:46:11.392613+00:00"
Monday, April 14th, 2025 at 6:46:11 PM GMT+00:00
model
"openai/gpt-4.1-nano-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
414
moderation_latency
96
generation_time
2917
tokens_prompt
42
tokens_completion
128
native_tokens_prompt
42
native_tokens_completion
129
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
0.0000558
Evaluation details
Result
Evaluator
Details
Meta Data
76.3918%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
20
1
21
2
20
3
21
4
19