NC Bench
Overview
About
Tests
Models
Model
Gemini 2.5 Flash
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-11-18-01KACP6QFGB5VRA2CR2ZJV7RAV
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 the gaslight’s melancholic glow. A chilling wind whispered through the alley, carrying the stench of damp earth. Lord Ashworth lay sprawled awkwardly, a crimson bloom staining his pristine white evening shirt. His monocle, usually perched jauntily, had shattered beside his unseeing sapphire eye. A small, ornate silver letter opener protruded precisely from his still chest. Footsteps squelched softly in the nearby puddle, approaching with measured urgency. Detective Inspector Thorne’s trench coat billowed dramatically as he surveyed the gruesome scene. A single, perfectly preserved white orchid lay delicately near Ashworth’s pale outstretched hand. Thorne knelt slowly, his keen eyes scanning every minute, revealing detail. The air hung heavy with the grim finality of recent, terrible violence.
created_at
"2025-11-18T23:53:39.548532+00:00"
Tuesday, November 18th, 2025 at 11:53:39 PM GMT+00:00
model
"google/gemini-2.5-flash"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
440
moderation_latency
(null)
generation_time
1428
tokens_prompt
42
tokens_completion
174
native_tokens_prompt
38
native_tokens_completion
167
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
0.0004289
api_type
"completions"
id
"gen-1763510017-c5MjZgEt85nw8mCbUZnI"
upstream_id
(null)
total_cost
0.0004289
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
10
1
13
2
14
3
12
4
12
5
11
6
13
7
13
8
11
9
12