Model

Gemini 2.5 Pro

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-11-18-01KACPCE1D540XY5X0HXDQHX9D

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
Detective Inspector Miles Corbin arrived at the desolate manor as the relentless autumn rain lashed against his worn trench coat. The great oak door creaked shut behind him, plunging the vast, empty entrance hall into an unnervingly profound silence. He followed the stoic butler through a long corridor of portraits, all towards the heavy mahogany doors of the library. Lord Harrington Ashworth was slumped sideways in his favourite high-backed leather chair, a man who had read his final chapter. An overturned crystal tumbler had soaked a dark, spreading stain of expensive brandy into the priceless, antique Persian rug. Yet, a neatly folded piece of expensive stationery was placed deliberately within the dead man’s cold, unmoving left hand.
created_at"2025-11-18T23:57:00.584272+00:00" Tuesday, November 18th, 2025 at 11:57:00 PM GMT+00:00
model"google/gemini-2.5-pro" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2699
moderation_latency(null)
generation_time15708
tokens_prompt42
tokens_completion887
native_tokens_prompt38
native_tokens_completion1811
native_tokens_completion_images0
native_tokens_reasoning1676
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/" 
is_byokfalse
finish_reason"stop" 
native_finish_reason"STOP" 
usage0.0181575
api_type"completions" 
id"gen-1763510204-4Cq6yYUYr77GhjeltdrL" 
upstream_id(null)
total_cost0.0181575
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio" 

Evaluation details

Result Evaluator Details Meta Data
73.7687% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
119
220
321
419
519