NC Bench
Overview
About
Tests
Models
Model
Gemini 2.5 Flash
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-11-18-01KACP46430MXD78WAG93RTS56
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
Messages
Meta
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_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
252
moderation_latency
(null)
generation_time
1393
tokens_prompt
42
tokens_completion
179
native_tokens_prompt
38
native_tokens_completion
168
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
0.0004314
api_type
"completions"
id
"gen-1763509934-KyYD1a9L4nqRoH6njYH5"
upstream_id
(null)
total_cost
0.0004314
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
10
wordCounts
0
14
1
13
2
13
3
14
4
14
5
12
6
12
7
12
8
10
9
10