NC Bench
Overview
About
Tests
Models
Model
Gemini 2.5 Pro
Test
N-Length Sentences
Scenario
Write sentences with 10 words each
Run ID
2025-11-18-01KACPAJRGK8T8XVE4862TFN0W
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
Rain lashed against the tall, arched library windows. Dust motes danced within a single cone of light. A single lamp illuminated the large, dark oak desk. A man slumped forward over an ancient leather-bound book. His head rested gently upon an open page of text. A small, dark stain spread slowly across the fragile paper. An ornate letter opener lay beside his pale, still hand. The grand old clock on the wall had stopped ticking. Its hands were frozen precisely at the stroke of midnight. Something vital was missing from this very quiet, tidy scene.
created_at
"2025-11-18T23:55:59.390973+00:00"
Tuesday, November 18th, 2025 at 11:55:59 PM GMT+00:00
model
"google/gemini-2.5-pro"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2003
moderation_latency
(null)
generation_time
15267
tokens_prompt
42
tokens_completion
691
native_tokens_prompt
38
native_tokens_completion
2007
native_tokens_completion_images
0
native_tokens_reasoning
1892
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
0.0201175
api_type
"completions"
id
"gen-1763510143-56NWyqSVPHgAaANERd1B"
upstream_id
(null)
total_cost
0.0201175
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
87.8283%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
8
1
9
2
9
3
10
4
10
5
10
6
10
7
10
8
10
9
10