Model

Gemini 3 Flash (Preview)

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2026-02-08-01KGYX5G64TBGR2NAJZJCY6REG

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 in the breeze. Sir Alistair slumped within his leather armchair while a single crimson drop stained the starch of his white tuxedo shirt. No one heard the muffled gunshot because the thunderous storm outside drowned every hollow sound within the cold stone manor. Lady Penelope entered the library holding two crystal glasses filled with vintage port before she noticed the terrible, grisly scene. Her scream echoed through the long corridor but the shadowy figure had already vanished into the thick and swirling fog. Heavy boots crunched upon the gravel driveway as the mysterious killer escaped toward the iron gates of the silent estate. Near the victim’s hand lay a shredded letter containing a secret that someone clearly felt was worth a brutal death. Now the fire flickered low in the grate while the smell of gunpowder lingered in the stagnant and humid air.
created_at"2026-02-08T15:15:50.937921+00:00" Sunday, February 8th, 2026 at 3:15:50 PM GMT+00:00
model"google/gemini-3-flash-preview-20251217" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency737
moderation_latency(null)
generation_time2311
tokens_prompt35
tokens_completion195
native_tokens_prompt38
native_tokens_completion192
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" 
usage0.000595
router(null)
provider_responses
0
status200
is_byokfalse
latency737
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-1770563748-8ULTFG7nhHmtnonoIFSq" 
upstream_id(null)
total_cost0.000595
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
021
120
220
320
420
520
620
720