Model

Gemini 3 Flash (Preview)

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2026-02-08-01KGYXC50FAKAG1X3R0M4KZNDP

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 heavy oak mantle struck midnight just as the primary guest slumped forward onto the velvet. A silver letter opener protruded from his silk waistcoat while a single drop of crimson blood ruined the white tablecloth. Nobody in the crowded dining room dared to speak or move while the heavy scent of bitter almonds filled the. The hostess clutched her pearl necklace so tightly that the string snapped and scattered small white beads across the floor. Someone must have turned the brass key because every heavy wooden door was locked firmly from the very inside tonight. Inspector Miller stepped through the French windows and adjusted his spectacles before examining the body lying on the patterned rug. He noticed that the victim still held a scrap of parchment tightly gripped within his cold and stiffening right hand. This weekend at the manor was supposed to be a celebration but now it would certainly end in a tragedy.
created_at"2026-02-08T15:19:28.642915+00:00" Sunday, February 8th, 2026 at 3:19:28 PM GMT+00:00
model"google/gemini-3-flash-preview-20251217" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1011
moderation_latency(null)
generation_time2226
tokens_prompt35
tokens_completion176
native_tokens_prompt38
native_tokens_completion172
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" 
usage0.000535
router(null)
provider_responses
0
status200
is_byokfalse
latency1011
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-1770563965-DGUtaFWx1ij1lrwdd9NA" 
upstream_id(null)
total_cost0.000535
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