NC Bench
Overview
About
Tests
Models
Model
GPT-4.1
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-14-01JRTSVKMBRFSBQV9RDADH46YK
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
Storm clouds bruised the evening sky as guests arrived, the grand estate’s windows aglow like watchful, whispering eyes behind curtains. Crystal glasses clinked amid laughter, but tension threaded the air, sharp and invisible, as someone studied the group intently. A shriek from upstairs shattered conversations, freezing every guest, as the butler rushed ahead and flung open the ornate door. On polished marble sprawled the lifeless heiress, silk gown stained red, her hand clutching a crumpled note nobody could decipher. Rain battered the mansion, obscuring footprints and evidence, as the detective knelt beside the body and surveyed the stunned crowd.
id
"gen-1744656257-t7AKpQe0c12p6ZpmUYjV"
upstream_id
"chatcmpl-BMJ4zmrxsX4uE1p8aviNAD5iK8cPS"
total_cost
0.001196
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:44:20.167058+00:00"
Monday, April 14th, 2025 at 6:44:20 PM GMT+00:00
model
"openai/gpt-4.1-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
356
moderation_latency
98
generation_time
1703
tokens_prompt
42
tokens_completion
138
native_tokens_prompt
42
native_tokens_completion
139
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
0.001196
Evaluation details
Result
Evaluator
Details
Meta Data
92.1306%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
20
1
19
2
20
3
20
4
20