NC Bench
Overview
About
Tests
Models
Model
GPT-4.1
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-14-01JRTSRVVNGA7VHV722H4FPE4A
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 battered the ancient manor’s windows, while inside, eleven guests gathered uneasily, unaware that doom hovered nearby, unseen, silent. The grandfather clock chimed eight times as the lights flickered, and anxious glances were exchanged amid murmurs of the storm’s ferocity. Lady Fairchild smiled through pearl-red lips, her voice too sweet, masking something darker, as she beckoned everyone to the drawing room. Colonel Harrow, rigid in his seat near the fire, fingered his watch-chain nervously, gaze darting toward the shadowed hallway repeatedly. No one noticed the butler, Mr. Grieves, who moved soundlessly past the velvet drapes, carrying a silver tray trembling slightly. A clap of thunder masked a sudden, muffled cry—just one—but it was enough to freeze everyone’s blood with dread. Sir Edwin dropped his glass, shattering crystal on the floor, and the silence that followed was heavier than the storm’s fury.
id
"gen-1744656167-DKnBZNVXbuz58Ner99Ht"
upstream_id
"chatcmpl-BMJ3XtC3SVcYBYoMOlNHm6pMFEiq7"
total_cost
0.001708
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:42:52.746408+00:00"
Monday, April 14th, 2025 at 6:42:52 PM GMT+00:00
model
"openai/gpt-4.1-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
663
moderation_latency
88
generation_time
4430
tokens_prompt
42
tokens_completion
202
native_tokens_prompt
42
native_tokens_completion
203
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
0.001708
Evaluation details
Result
Evaluator
Details
Meta Data
59.5427%
Matches word count
n/a
neededClean
false
sentences
7
wordCounts
0
19
1
21
2
22
3
21
4
20
5
21
6
21