Model

GPT-4.1 Nano

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-04-14-01JRTSWZMT37JQRS14HRQPJKNA

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 quiet town of Ravenwood, fog curled around the ancient manor’s porch as dawn’s first light began to flicker gently. Detective Harper arrived swiftly, eyes narrowing at the scattered footprints leading to the grand entrance, disturbed yet purposeful in design. Inside, Ella’s lifeless body lay sprawled on the museum’s marble floor, a crimson stain bleeding across her once pristine dress. A chilling wind whispered through broken windows, carrying secrets from the shadows that lurked within the mansion’s creaking walls. With a deep sigh, Harper knelt beside her, noting the shallow breath and the silent scream frozen upon her delicate face.
id"gen-1744656302-9WDoi6wqlSzqLtN6VPgg" 
upstream_id"chatcmpl-BMJ5ioACOyennQG1RCST7OxXEJas0" 
total_cost0.000057
cache_discount(null)
provider_name"OpenAI" 
created_at"2025-04-14T18:45:03.574557+00:00" Monday, April 14th, 2025 at 6:45:03 PM GMT+00:00
model"openai/gpt-4.1-nano-2025-04-14" 
app_id182717
streamedtrue
cancelledfalse
latency229
moderation_latency123
generation_time262
tokens_prompt42
tokens_completion131
native_tokens_prompt42
native_tokens_completion132
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" 
usage0.000057

Evaluation details

Result Evaluator Details Meta Data
76.3918% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
021
120
220
319
421