Model

GPT-4.1 Nano

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-04-14-01JRTSR5VNTXMTBJXX6SN4R45K

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
In the dimly lit study, Professor Adler's body lay sprawled across antique Persian rugs, a crimson pool soaking into worn silk. A single candlestick toppled nearby, its melted wax shimmering under the flickering flame, casting eerie shadows on dusty, ancient books. Detective Morgan arrived silently, surveying the scene with keen eyes, noting the ornate dagger lodged in the victim’s back, blood still fresh. Outside the grand estate, heavy fog clung to the mansion, muffling footsteps and whispers of gossip from suspicious neighbors nearby. Inside, the air was thick with tension, secrets lurking behind polished furniture and antique portraits staring with silent judgment. A broken window latch suggested forced entry, yet nothing appeared stolen, and the room’s contents remained untouched and orderly. Morgan carefully examined the dagger, noticing strange symbols etched onto its hilt, hinting at an obscure, perhaps personal, motive. Footsteps echoed in the corridor, revealing several people, each with anxious expressions and motives concealed behind calm facades. How many lies had been told before tragedy struck, and who among these faces carried the truth buried within?
id"gen-1744656144-TEEE4qVytQ4WN7sRnP5M" 
upstream_id"chatcmpl-BMJ3BW9vWQZt3V4zxL1L2ZFAxkOgY" 
total_cost0.0000966
cache_discount(null)
provider_name"OpenAI" 
created_at"2025-04-14T18:42:26.720458+00:00" Monday, April 14th, 2025 at 6:42:26 PM GMT+00:00
model"openai/gpt-4.1-nano-2025-04-14" 
app_id182717
streamedtrue
cancelledfalse
latency395
moderation_latency93
generation_time759
tokens_prompt42
tokens_completion230
native_tokens_prompt42
native_tokens_completion231
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" 
usage0.0000966

Evaluation details

Result Evaluator Details Meta Data
58.9258% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
021
120
222
320
419
519
619
718
819