Model

GPT-4.1 Nano

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-04-14-01JRTSXENW8HP6CTTNTXXBQHT2

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
The rain hammered softly against the grand Victorian mansion’s windows as Detective Harris arrived silently through the foggy, deserted driveway. Inside, the grand hall was dimly lit, with shattered porcelain scattered across the mahogany floor, hinting at a brutal struggle endured. Crimson pools stained the ornate Persian rug, revealing the victim’s desperate final moments before succumbing to unseen, deadly violence. Voices echoed from the grand staircase’s shadowed landing, as neighbors whispered rumors about the recent quarrels and hidden secrets. Detective Harris examined the bloodied dagger lying obliviously beside the victim, noting its intricate gold handle and suspiciously clean blade.
id"gen-1744656317-bMVolnK8x1BHq3UXbMlI" 
upstream_id"chatcmpl-BMJ6278CYbUUYtxr40uKV4nFgmpgG" 
total_cost0.0000574
cache_discount(null)
provider_name"OpenAI" 
created_at"2025-04-14T18:45:24.799712+00:00" Monday, April 14th, 2025 at 6:45:24 PM GMT+00:00
model"openai/gpt-4.1-nano-2025-04-14" 
app_id182717
streamedtrue
cancelledfalse
latency4881
moderation_latency207
generation_time1525
tokens_prompt42
tokens_completion132
native_tokens_prompt42
native_tokens_completion133
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" 
usage0.0000574

Evaluation details

Result Evaluator Details Meta Data
76.3918% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
121
219
319
420