NC Bench
Overview
About
Tests
Models
Model
Gemini 2.5 Pro
Test
N-Length Sentences
Scenario
Write sentences with 10 words each
Run ID
2025-11-18-01KACP363TK1KXY54BYRJA1W1F
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
The old library was silent, a tomb for forgotten words. Dust motes danced in the single, slanting moonbeam. Upon the rich Persian rug, Lord Ashworth lay very still. A silver letter opener protruded from his expensive tweed vest. His vacant eyes stared sightlessly at the ornate, high ceiling. A half-empty glass of brandy sat beside one cold hand. One priceless, ancient book was lying open on the floor. The grandfather clock had stopped at the stroke of midnight.
created_at
"2025-11-18T23:51:53.703267+00:00"
Tuesday, November 18th, 2025 at 11:51:53 PM GMT+00:00
model
"google/gemini-2.5-pro"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2159
moderation_latency
(null)
generation_time
11690
tokens_prompt
42
tokens_completion
583
native_tokens_prompt
38
native_tokens_completion
1282
native_tokens_completion_images
0
native_tokens_reasoning
1181
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
0.0128675
api_type
"completions"
id
"gen-1763509901-2xuPpiLGz38xs7c4UJ8G"
upstream_id
(null)
total_cost
0.0128675
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
88.0252%
Matches word count
n/a
neededClean
false
sentences
8
wordCounts
0
10
1
8
2
10
3
10
4
10
5
11
6
10
7
10