NC Bench
Overview
About
Tests
Models
Model
Gemini 2.5 Pro
Test
N-Length Sentences
Scenario
Write sentences with 10 words each
Run ID
2025-11-18-01KACPCW3FTF7DMZ3F5EHXBBXV
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 grandfather clock chimed midnight through the silent house. Librarian Elara Vance tidied the last of the scattered books. A strange, sweet coppery smell drifted from the history aisle. She followed the scent past shelves of ancient, leather-bound books. Lord Ashworth was slumped over his enormous, polished oak desk. A silver letter opener was embedded deep within his chest. His vacant eyes stared at a half-written, cryptic final note. Dark crimson had stained the pages of a priceless atlas. Elara Vance stood frozen, her quiet, orderly world now shattered. A single scream was trapped behind her suddenly trembling lips.
created_at
"2025-11-18T23:57:17.969456+00:00"
Tuesday, November 18th, 2025 at 11:57:17 PM GMT+00:00
model
"google/gemini-2.5-pro"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2438
moderation_latency
(null)
generation_time
18772
tokens_prompt
42
tokens_completion
825
native_tokens_prompt
38
native_tokens_completion
2177
native_tokens_completion_images
0
native_tokens_reasoning
2048
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
0.0218175
api_type
"completions"
id
"gen-1763510218-hveXTJn83m0kJENpIWun"
upstream_id
(null)
total_cost
0.0218175
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
94.8164%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
10
1
10
2
10
3
11
4
10
5
10
6
11
7
10
8
10
9
10