NC Bench
Overview
About
Tests
Models
Model
GPT-4.1
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-14-01JRTSZZEMXBRH82X84MQEQZFQ
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
Rain tapped steadily on the cobblestone street, disguising the footsteps of someone slipping through the alleyway behind Rosemary’s Café. The neon sign flickered, casting crimson reflections across puddles, painting the alley with swirling pools of red and eerie shadows. Inside, porcelain teacups rattled slightly on their saucers as the bell chimed, announcing the arrival of a single unexpected guest. Margaret Johansson balanced her ledger with trembling fingers, glancing nervously at the clock, watching the minute hand crawl past midnight. A scream shattered the night’s uneasy calm, echoing from the alley, followed by the sharp, unmistakable clatter of metal.
id
"gen-1744656400-M1ki0PXHrotba0e4cGxB"
upstream_id
"chatcmpl-BMJ7I97wHEoCoOBvWjTUz8qhuhAoX"
total_cost
0.00118
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:46:42.88277+00:00"
Monday, April 14th, 2025 at 6:46:42 PM GMT+00:00
model
"openai/gpt-4.1-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
672
moderation_latency
86
generation_time
1116
tokens_prompt
42
tokens_completion
136
native_tokens_prompt
42
native_tokens_completion
137
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
0.00118
Evaluation details
Result
Evaluator
Details
Meta Data
84.2612%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
19
1
20
2
20
3
20
4
19