Model

Gemini 2.5 Flash

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-11-18-01KACP46430MXD78WAG93RTS56

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
Detective Miles Corbin surveyed the opulent, silent ballroom, moonlight slicing through dusty, tall windows. A single, ornate music box lay open, its delicate melody long since stilled. The air hung thick with an unnatural quiet, heavy with unspoken, morbid secrets. His gaze landed on Sterling Blackwood, draped across the grand piano’s slick, ebony lid. Blackwood, a notorious collector, was now just a crimson stain, a tragic, lifeless display. A rare, ancient dagger protruded from his chest, its jewels gleaming malevolently. Corbin noted the almost theatrical placement, a morbid, deliberate work of art. This was no simple robbery; it felt like a pointed, personal message. Every detail hinted at a meticulously planned, vengeful, intricate plot. He would meticulously unravel this dark, perplexing, tragic human riddle.
created_at"2025-11-18T23:52:16.176402+00:00" Tuesday, November 18th, 2025 at 11:52:16 PM GMT+00:00
model"google/gemini-2.5-flash" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency252
moderation_latency(null)
generation_time1393
tokens_prompt42
tokens_completion179
native_tokens_prompt38
native_tokens_completion168
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" 
usage0.0004314
api_type"completions" 
id"gen-1763509934-KyYD1a9L4nqRoH6njYH5" 
upstream_id(null)
total_cost0.0004314
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
014
113
213
314
414
512
612
712
810
910