NC Bench
Overview
About
Tests
Models
Model
Gemini 2.5 Pro
Test
N-Length Sentences
Scenario
Write sentences with 10 words each
Run ID
2025-11-18-01KACP7NZDWFTDRDV811VSRZNQ
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 grandfather clock chimed once in the dark, silent hall. Rain lashed against the tall, leaded glass of the library. A single desk lamp cast long and very eerie shadows. Thunder rumbled deeply, shaking dust from the old leather books. Lord Harrington sat slumped over his vast, polished mahogany desk. His cold, lifeless hand still clutched a gilded fountain pen. A dark crimson stain bloomed across the green leather blotter. His eyes stared, unseeing, at a half-finished, cryptic final letter. The heavy library door creaked open with a deep groan. A tall, unknown silhouette stood waiting within the sheer darkness.
created_at
"2025-11-18T23:54:27.057796+00:00"
Tuesday, November 18th, 2025 at 11:54:27 PM GMT+00:00
model
"google/gemini-2.5-pro"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3009
moderation_latency
(null)
generation_time
17424
tokens_prompt
42
tokens_completion
958
native_tokens_prompt
38
native_tokens_completion
1968
native_tokens_completion_images
0
native_tokens_reasoning
1837
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
0.0197275
api_type
"completions"
id
"gen-1763510048-BGX324qp7Vz0Cab0pfKB"
upstream_id
(null)
total_cost
0.0197275
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
97.4082%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
11
8
10
9
10