Model

Gemini 3 Flash (Preview)

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2026-02-08-01KGYXKNQHNCPNN14DDFHRH5Q2

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 mahogany mantle struck midnight just as the heavy velvet curtains began to sway quite ominously. Detective Miller adjusted his saturated trench coat while stepping over the crimson puddle spreading across the expensive Persian floral rug. No one heard the muffled scream because the torrential rain hammered relentlessly against the tall stained glass windows of the library. A single silver letter opener protruded from the victim’s chest, pinning a cryptic handwritten note to his silk evening waistcoat. The scent of bitter almonds and expensive tobacco lingered in the stagnant air, suggesting a very sophisticated yet deadly presence. Six dinner guests stood frozen in the grand foyer, their terrified faces illuminated by a sudden flash of jagged lightning. Every person in this secluded mansion possessed a hidden motive for wanting the wealthy old man dead before the dawn. Miller pulled out his weathered notebook and began to scan the silent room for any sign of a discarded weapon.
created_at"2026-02-08T15:23:35.140324+00:00" Sunday, February 8th, 2026 at 3:23:35 PM GMT+00:00
model"google/gemini-3-flash-preview-20251217" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency730
moderation_latency(null)
generation_time2081
tokens_prompt35
tokens_completion194
native_tokens_prompt38
native_tokens_completion190
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" 
usage0.000589
router(null)
provider_responses
0
status200
is_byokfalse
latency730
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-1770564212-UvKcBdAe63qqOsVoYRzH" 
upstream_id(null)
total_cost0.000589
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio" 

Evaluation details

Result Evaluator Details Meta Data
95.0816% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
020
120
221
320
420
520
620
720