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

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_cost0.001708
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_id182717
streamedtrue
cancelledfalse
latency663
moderation_latency88
generation_time4430
tokens_prompt42
tokens_completion202
native_tokens_prompt42
native_tokens_completion203
native_tokens_reasoning0
num_media_prompt(null)
num_media_completion(null)
num_search_results(null)
origin"https://ncbench.com/" 
is_byokfalse
finish_reason"stop" 
native_finish_reason"stop" 
usage0.001708

Evaluation details

Result Evaluator Details Meta Data
59.5427% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
019
121
222
321
420
521
621