Model

GPT-4.1 Nano

Test

N-Length Sentences

Scenario

Write sentences with 10 words each

Run ID

2025-04-14-01JRTSSK5B9Y1RX7JF5P11YYEH

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The fog rolled in softly over the silent town square tonight. An eerie breeze whispered secrets through the ancient, twisted trees quietly. Detective Morgan arrived promptly, eyes scanning the deserted, dim alleyway. A scream shattered the calm, echoing beneath the cold, gray sky. Late hour shadows revealed a figure sprawled on cold cobblestone. Blood pooled around the body, shining under the flickering streetlamp light. No witnesses appeared as Morgan kneeled, studying the victim's trembling hand. A single, blood-red flower lay clutched in her stiff fingers. Footsteps approached quietly, disturbing the surrounding darkness, whispering suspicion. Hence began the mystery that would threaten everyone’s calm and safety.
id"gen-1744656191-1LSRJyk0EErE1luLYKZH" 
upstream_id"chatcmpl-BMJ3vo3Masg3UQUT53WkjMn7GwrHs" 
total_cost0.0000646
cache_discount(null)
provider_name"OpenAI" 
created_at"2025-04-14T18:43:12.473397+00:00" Monday, April 14th, 2025 at 6:43:12 PM GMT+00:00
model"openai/gpt-4.1-nano-2025-04-14" 
app_id182717
streamedtrue
cancelledfalse
latency337
moderation_latency100
generation_time299
tokens_prompt42
tokens_completion150
native_tokens_prompt42
native_tokens_completion151
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" 
usage0.0000646

Evaluation details

Result Evaluator Details Meta Data
79.2655% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
011
111
210
311
410
511
611
711
89
911