NC Bench
Overview
About
Tests
Models
Model
Gemini 3 Flash (Preview)
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2026-02-08-01KGYXKNQHNCPNN14DDFHRH5Q2
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 quite ominously. Detective Miller adjusted his saturated trench coat while stepping over the crimson puddle spreading across the expensive Persian floral rug. No one heard the muffled scream because the torrential rain hammered relentlessly against the tall stained glass windows of the library. A single silver letter opener protruded from the victim’s chest, pinning a cryptic handwritten note to his silk evening waistcoat. The scent of bitter almonds and expensive tobacco lingered in the stagnant air, suggesting a very sophisticated yet deadly presence. Six dinner guests stood frozen in the grand foyer, their terrified faces illuminated by a sudden flash of jagged lightning. Every person in this secluded mansion possessed a hidden motive for wanting the wealthy old man dead before the dawn. Miller pulled out his weathered notebook and began to scan the silent room for any sign of a discarded weapon.
created_at
"2026-02-08T15:23:35.140324+00:00"
Sunday, February 8th, 2026 at 3:23:35 PM GMT+00:00
model
"google/gemini-3-flash-preview-20251217"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
730
moderation_latency
(null)
generation_time
2081
tokens_prompt
35
tokens_completion
194
native_tokens_prompt
38
native_tokens_completion
190
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
0.000589
router
(null)
provider_responses
0
status
200
is_byok
false
latency
730
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-1770564212-UvKcBdAe63qqOsVoYRzH"
upstream_id
(null)
total_cost
0.000589
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
20
1
20
2
21
3
20
4
20
5
20
6
20
7
20