NC Bench
Overview
About
Tests
Models
Model
Gemini 3 Flash (Preview)
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2026-02-08-01KGYXCNJNGXGKN4E5PFQQGDEQ
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
The grandfather clock struck midnight while a heavy fog crawled over the manicured lawn of the ancient and silent country estate. Inside the library, Arthur Penhaligon slumped over his mahogany desk with a silver letter opener protruding from his rigid, cold spine. Rain lashed against the leaded windowpanes as the scent of expensive brandy mingled with the metallic tang of fresh blood. A single silk glove lay abandoned near the hearth, its white fabric stained by a splash of deep, crimson wine. Somewhere in the shadows of the long hallway, a floorboard creaked beneath the weight of a pair of stealthy boots. The killer paused to listen for any signs of movement before slipping through the heavy oak doors into the night. No one heard the muffled scream that echoed briefly through the empty corridors of the house during the violent storm. Now the only sound remaining was the rhythmic ticking of the clock marking the passage of a very long night.
created_at
"2026-02-08T15:19:45.322011+00:00"
Sunday, February 8th, 2026 at 3:19:45 PM GMT+00:00
model
"google/gemini-3-flash-preview-20251217"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
739
moderation_latency
(null)
generation_time
1730
tokens_prompt
35
tokens_completion
192
native_tokens_prompt
38
native_tokens_completion
184
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
0.000571
router
(null)
provider_responses
0
status
200
is_byok
false
latency
739
endpoint_id
"6e82f652-2693-4b60-bbe0-7362d6e345f0"
provider_name
"Google AI Studio"
model_permaslug
"google/gemini-3-flash-preview-20251217"
api_type
"completions"
id
"gen-1770563982-F0sf81aUd97PZBZL0vWi"
upstream_id
(null)
total_cost
0.000571
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
90.1633%
Matches word count
n/a
neededClean
false
sentences
8
wordCounts
0
21
1
21
2
20
3
20
4
20
5
20
6
20
7
20