Model

Gemini 2.5 Flash

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-11-18-01KACP3AYBPCDH0TZA2RBN30R9

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 slicked the grimy cobblestones, reflecting the gaslight's flickering glow like a broken mirror. A piercing scream shattered the somber twilight, echoing through the narrow, desolate alleyway. Detective Elliot Vance, a man weathered by unspoken sorrow, quickened his deliberate pace toward the unfolding chaos. He adjusted his worn trench coat, its familiar weight a comfort against the chill of approaching night. The acrid scent of cheap whiskey and something distinctly metallic hung heavy in the damp, frigid air. Vance’s gaze fell upon a huddled, motionless figure sprawled awkwardly beside an overflowing refuse bin. Crimson flowered across the pristine white shirt, stark against the darkening puddles on the ancient stone. A single, ornate silver locket lay discarded nearby, glinting dully in the encroaching shadows. The detective knelt, his practiced eyes immediately scanning for any telling details or overlooked clues. Another night, another life extinguished too soon, another mystery demanding its painful, unavoidable resolution.
created_at"2025-11-18T23:51:48.545607+00:00" Tuesday, November 18th, 2025 at 11:51:48 PM GMT+00:00
model"google/gemini-2.5-flash" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency303
moderation_latency(null)
generation_time1681
tokens_prompt42
tokens_completion220
native_tokens_prompt38
native_tokens_completion209
native_tokens_completion_images0
native_tokens_reasoning0
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" 
usage0.0005339
api_type"completions" 
id"gen-1763509906-urzrVcDGiDXmje34Aofw" 
upstream_id(null)
total_cost0.0005339
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio" 

Evaluation details

Result Evaluator Details Meta Data
0.3367% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
014
113
217
317
417
515
616
714
815
914