NC Bench
Overview
About
Tests
Models
Model
Gemini 3 Flash (Preview)
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2026-02-08-01KGYX5G64TBGR2NAJZJCY6REG
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 golden clock on the mahogany mantle struck midnight just as the heavy velvet curtains began to sway in the breeze. Sir Alistair slumped within his leather armchair while a single crimson drop stained the starch of his white tuxedo shirt. No one heard the muffled gunshot because the thunderous storm outside drowned every hollow sound within the cold stone manor. Lady Penelope entered the library holding two crystal glasses filled with vintage port before she noticed the terrible, grisly scene. Her scream echoed through the long corridor but the shadowy figure had already vanished into the thick and swirling fog. Heavy boots crunched upon the gravel driveway as the mysterious killer escaped toward the iron gates of the silent estate. Near the victim’s hand lay a shredded letter containing a secret that someone clearly felt was worth a brutal death. Now the fire flickered low in the grate while the smell of gunpowder lingered in the stagnant and humid air.
created_at
"2026-02-08T15:15:50.937921+00:00"
Sunday, February 8th, 2026 at 3:15:50 PM GMT+00:00
model
"google/gemini-3-flash-preview-20251217"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
737
moderation_latency
(null)
generation_time
2311
tokens_prompt
35
tokens_completion
195
native_tokens_prompt
38
native_tokens_completion
192
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
0.000595
router
(null)
provider_responses
0
status
200
is_byok
false
latency
737
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-1770563748-8ULTFG7nhHmtnonoIFSq"
upstream_id
(null)
total_cost
0.000595
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
95.0816%
Matches word count
n/a
neededClean
false
sentences
8
wordCounts
0
21
1
20
2
20
3
20
4
20
5
20
6
20
7
20