NC Bench
Overview
About
Tests
Models
Model
Gemini 2.5 Pro
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-11-18-01KACP4SQ15TYE5BKAEVXG6J1M
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
Rain lashed furiously against the leaded glass as Detective Harding finally stepped into the grand, oppressively silent Blackwood manor. A stoic, white-gloved butler guided him through the shadowed hallway towards the heavy, oak doors of the large library. There, slumped within a crimson wingback chair by the crackling fire, was the still and lifeless body of Alistair Blackwood. A single, dark stain spread across the starched white front of his shirt, just above his silent, unbeating heart. An overturned whiskey tumbler lay on the mahogany table, its amber liquid staining the pages of an old, leather-bound book. The detective scanned the meticulously tidy room, where only death itself seemed to be so terribly out of its place.
created_at
"2025-11-18T23:52:50.242303+00:00"
Tuesday, November 18th, 2025 at 11:52:50 PM GMT+00:00
model
"google/gemini-2.5-pro"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2778
moderation_latency
(null)
generation_time
15656
tokens_prompt
42
tokens_completion
854
native_tokens_prompt
38
native_tokens_completion
1657
native_tokens_completion_images
0
native_tokens_reasoning
1509
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
0.0166175
api_type
"completions"
id
"gen-1763509954-F8LVDzrFz09k7flY3aRY"
upstream_id
(null)
total_cost
0.0166175
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
80.3265%
Matches word count
n/a
neededClean
false
sentences
6
wordCounts
0
19
1
20
2
20
3
19
4
21
5
20