Model

GPT-4.1

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-04-14-01JRTSY97NFV4VQQ1AYRSMWXDF

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 splattered against the dimly lit windows, casting streaks across the ancient library walls lined with forgotten, dust-laden books. A crimson stain spread silently across the grand Persian rug, pooling beneath the lifeless hand of Lord Reginald Bartholomew IV. Chandeliers glimmered overhead, their reflected light flickering upon terrified faces gathered, each guest unwillingly trapped within the estate’s stone embrace. The grandfather clock chimed midnight, its reverberations mingling with gasps as Lady Sparrow discovered the dagger wedged deep in Reginald’s chest. Thunder roared above the moors, momentarily illuminating Detective Marlowe’s silhouette as he surveyed the macabre tableau, eyes narrowed with suspicion.
id"gen-1744656344-sApF4fJK6Co4muYDVoXi" 
upstream_id"chatcmpl-BMJ6PPdudpq0GipX3CFXWGjYbfwiZ" 
total_cost0.0013
cache_discount(null)
provider_name"OpenAI" 
created_at"2025-04-14T18:45:47.526688+00:00" Monday, April 14th, 2025 at 6:45:47 PM GMT+00:00
model"openai/gpt-4.1-2025-04-14" 
app_id182717
streamedtrue
cancelledfalse
latency494
moderation_latency127
generation_time1317
tokens_prompt42
tokens_completion151
native_tokens_prompt42
native_tokens_completion152
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" 
usage0.0013

Evaluation details

Result Evaluator Details Meta Data
92.1306% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
321
420