Model

Gemini 2.5 Flash

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-11-18-01KACPARKHBBV37KX3R1J9BK0H

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
Rain slicked the grimy cobblestones, reflecting a single flickering gas lamp. Lord Ashworth lay dead, a crimson stain on his pristine cravat. The library’s grand silence felt heavy, a shroud over the macabre scene. His monocle dangled precariously, a shattered lens glinting malevolently. A faint scent of burnt almond lingered, sharp and subtly disquieting. Footsteps echoed on the stairs, disrupting the room’s morbid stillness. Detective Harding entered, his weary gaze sweeping the opulent chamber. His trench coat dripped steadily, adding to the room’s damp chill. He knelt beside the peer, observing the body with grim precision. No forced entry suggested the killer was intimately known to him. The perfect crime scene almost taunted him with its quiet order. This was no simple robbery; a deeper motive surely propelled this act. Harding straightened slowly, his mind already piecing together dark possibilities. The game, it seemed, had already begun in this very room. He sensed betrayal hiding within these hwealthy, shadowed walls. Another aristocrat fallen, another mystery beckoning his careful attention. Harding knew this case would plumb the depths of human darkness. The truth, like the rain, would eventually fall, cold and revealing. He exchanged a look with his sergeant, a silent, grim understanding. Ashworth's last chapter was just the beginning of their long night.
created_at"2025-11-18T23:55:52.714424+00:00" Tuesday, November 18th, 2025 at 11:55:52 PM GMT+00:00
model"google/gemini-2.5-flash" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency309
moderation_latency(null)
generation_time2475
tokens_prompt42
tokens_completion312
native_tokens_prompt38
native_tokens_completion306
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" 
usage0.0007764
api_type"completions" 
id"gen-1763510149-sfDO21vbkaLldMoV39kE" 
upstream_id(null)
total_cost0.0007764
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
sentences20
wordCounts
011
111
212
39
411
510
610
711
811
911
1011
1112
1210
1311
149
159
1611
1711
1811
1911