NC Bench
Overview
About
Tests
Models
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
Messages
Meta
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_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
309
moderation_latency
(null)
generation_time
2475
tokens_prompt
42
tokens_completion
312
native_tokens_prompt
38
native_tokens_completion
306
native_tokens_completion_images
0
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"STOP"
usage
0.0007764
api_type
"completions"
id
"gen-1763510149-sfDO21vbkaLldMoV39kE"
upstream_id
(null)
total_cost
0.0007764
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
0.0000%
Matches word count
n/a
neededClean
false
sentences
20
wordCounts
0
11
1
11
2
12
3
9
4
11
5
10
6
10
7
11
8
11
9
11
10
11
11
12
12
10
13
11
14
9
15
9
16
11
17
11
18
11
19
11