Model

Gemini 3 Flash (Preview)

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2026-02-08-01KGYXNJ1BQYV2YM3XYRV26M7J

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
The golden clock on the rosewood mantle struck twelve times while a heavy mist rolled across the dark, silent estate. Sir Percival lay perfectly still upon the patterned Persian rug with a silver letter opener protruding from his frail chest. No one heard the muffled scream or the frantic scuffle that preceded the sudden silence within the cold, library walls. A single puddle of crimson ink pooled beneath his hand, staining the final line of his newly finished, secret will. Outside, the gardener noticed a flickering light in the west wing but decided it was merely the wind playing tricks. He stepped away from the window, leaving the dead man alone in the shadows of shadows of his grand home. Every heavy door remained locked from the inside, yet a bitter draft chilled the air like a cold, ghostly hand. The killer stood in the hallway, listening to the pounding of a guilty heart before slipping quietly into the night.
created_at"2026-02-08T15:24:37.149185+00:00" Sunday, February 8th, 2026 at 3:24:37 PM GMT+00:00
model"google/gemini-3-flash-preview-20251217" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency751
moderation_latency(null)
generation_time2272
tokens_prompt35
tokens_completion186
native_tokens_prompt38
native_tokens_completion180
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" 
usage0.000559
router(null)
provider_responses
0
status200
is_byokfalse
latency751
endpoint_id"6e82f652-2693-4b60-bbe0-7362d6e345f0" 
provider_name"Google AI Studio" 
model_permaslug"google/gemini-3-flash-preview-20251217" 
api_type"completions" 
id"gen-1770564274-uI97D6ehtcD75hmNjPhJ" 
upstream_id(null)
total_cost0.000559
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio" 

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
020
120
220
320
420
520
620
720