NC Bench
Overview
About
Tests
Models
Model
Gemini 2.5 Pro
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-11-18-01KACPCA02J1S4824CW767W061
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
A deep, suffocating silence had fallen upon the study, clinging to the heavy velvet drapes like a funeral shroud. Detective Harding took in the scene, his world-weary eyes missing no details of the chilling tableau laid out before him. Alistair Finch, the renowned tycoon, was slumped lifelessly over his grand mahogany desk, a testament to sudden, violent death. A pool of blackest ink had bled across a half-written letter, obscuring the unsent words for all of eternity. The grandfather clock in the corner had stopped ticking, its golden hands frozen forever at the precise stroke of midnight. A single French window stood ajar, letting in the chilling night air that whispered secrets among the towering bookshelves. This was no simple robbery gone wrong; this elegant room was a pristine stage meticulously set for a well-planned murder.
created_at
"2025-11-18T23:56:57.021064+00:00"
Tuesday, November 18th, 2025 at 11:56:57 PM GMT+00:00
model
"google/gemini-2.5-pro"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2138
moderation_latency
(null)
generation_time
16150
tokens_prompt
42
tokens_completion
903
native_tokens_prompt
38
native_tokens_completion
1848
native_tokens_completion_images
0
native_tokens_reasoning
1685
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
0.0185275
api_type
"completions"
id
"gen-1763510200-ubr2jiHYzD9US8dgybKN"
upstream_id
(null)
total_cost
0.0185275
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
71.8950%
Matches word count
n/a
neededClean
false
sentences
7
wordCounts
0
19
1
21
2
19
3
20
4
20
5
19
6
21