Model

Gemini 2.5 Flash

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-11-18-01KACP6QFGB5VRA2CR2ZJV7RAV

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 melancholic glow. A chilling wind whispered through the alley, carrying the stench of damp earth. Lord Ashworth lay sprawled awkwardly, a crimson bloom staining his pristine white evening shirt. His monocle, usually perched jauntily, had shattered beside his unseeing sapphire eye. A small, ornate silver letter opener protruded precisely from his still chest. Footsteps squelched softly in the nearby puddle, approaching with measured urgency. Detective Inspector Thorne’s trench coat billowed dramatically as he surveyed the gruesome scene. A single, perfectly preserved white orchid lay delicately near Ashworth’s pale outstretched hand. Thorne knelt slowly, his keen eyes scanning every minute, revealing detail. The air hung heavy with the grim finality of recent, terrible violence.
created_at"2025-11-18T23:53:39.548532+00:00" Tuesday, November 18th, 2025 at 11:53:39 PM GMT+00:00
model"google/gemini-2.5-flash" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency440
moderation_latency(null)
generation_time1428
tokens_prompt42
tokens_completion174
native_tokens_prompt38
native_tokens_completion167
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" 
usage0.0004289
api_type"completions" 
id"gen-1763510017-c5MjZgEt85nw8mCbUZnI" 
upstream_id(null)
total_cost0.0004289
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio" 

Evaluation details

Result Evaluator Details Meta Data
0.0000% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
113
214
312
412
511
613
713
811
912