Model

GPT-4.1 Nano

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-04-14-01JRTSYZKAYE8F8HPJ6AHMT9XX

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 library’s stained glass windows as shadows moved silently across ancient leather-bound bookshelves. A cold breeze slipped through the cracked door, carrying whispers of secrets long buried beneath dust-covered pages and forgotten memories. Detective Harper arrived promptly, eyes sharp and focused, sensing that tonight’s tranquility concealed a dark, violent truth awaiting discovery quietly. In the dim candlelight, a figure sprawled on the marble floor, blood pooling beneath, eyes wide with shock and silent screams. Nearby, a shattered teacup lay abandoned, scattered porcelain and scattered pages hinting at a struggle before the deadly assault.
id"gen-1744656367-Kb97ttDapZt4vxuN7pZY" 
upstream_id"chatcmpl-BMJ6lPlpaO7myUBNtbsZEynanmke9" 
total_cost0.0000558
cache_discount(null)
provider_name"OpenAI" 
created_at"2025-04-14T18:46:11.392613+00:00" Monday, April 14th, 2025 at 6:46:11 PM GMT+00:00
model"openai/gpt-4.1-nano-2025-04-14" 
app_id182717
streamedtrue
cancelledfalse
latency414
moderation_latency96
generation_time2917
tokens_prompt42
tokens_completion128
native_tokens_prompt42
native_tokens_completion129
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" 
usage0.0000558

Evaluation details

Result Evaluator Details Meta Data
76.3918% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
121
220
321
419