Model

GPT-4.1

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-04-14-01JRTSZZEMXBRH82X84MQEQZFQ

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
Rain tapped steadily on the cobblestone street, disguising the footsteps of someone slipping through the alleyway behind Rosemary’s Café. The neon sign flickered, casting crimson reflections across puddles, painting the alley with swirling pools of red and eerie shadows. Inside, porcelain teacups rattled slightly on their saucers as the bell chimed, announcing the arrival of a single unexpected guest. Margaret Johansson balanced her ledger with trembling fingers, glancing nervously at the clock, watching the minute hand crawl past midnight. A scream shattered the night’s uneasy calm, echoing from the alley, followed by the sharp, unmistakable clatter of metal.
id"gen-1744656400-M1ki0PXHrotba0e4cGxB" 
upstream_id"chatcmpl-BMJ7I97wHEoCoOBvWjTUz8qhuhAoX" 
total_cost0.00118
cache_discount(null)
provider_name"OpenAI" 
created_at"2025-04-14T18:46:42.88277+00:00" Monday, April 14th, 2025 at 6:46:42 PM GMT+00:00
model"openai/gpt-4.1-2025-04-14" 
app_id182717
streamedtrue
cancelledfalse
latency672
moderation_latency86
generation_time1116
tokens_prompt42
tokens_completion136
native_tokens_prompt42
native_tokens_completion137
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" 
usage0.00118

Evaluation details

Result Evaluator Details Meta Data
84.2612% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
019
120
220
320
419