Model

Gemini 2.5 Pro

Test

N-Length Sentences

Scenario

Write sentences with 10 words each

Run ID

2025-11-18-01KACPAJRGK8T8XVE4862TFN0W

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

AI
Rain lashed against the tall, arched library windows. Dust motes danced within a single cone of light. A single lamp illuminated the large, dark oak desk. A man slumped forward over an ancient leather-bound book. His head rested gently upon an open page of text. A small, dark stain spread slowly across the fragile paper. An ornate letter opener lay beside his pale, still hand. The grand old clock on the wall had stopped ticking. Its hands were frozen precisely at the stroke of midnight. Something vital was missing from this very quiet, tidy scene.
created_at"2025-11-18T23:55:59.390973+00:00" Tuesday, November 18th, 2025 at 11:55:59 PM GMT+00:00
model"google/gemini-2.5-pro" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2003
moderation_latency(null)
generation_time15267
tokens_prompt42
tokens_completion691
native_tokens_prompt38
native_tokens_completion2007
native_tokens_completion_images0
native_tokens_reasoning1892
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/" 
is_byokfalse
finish_reason"stop" 
native_finish_reason"STOP" 
usage0.0201175
api_type"completions" 
id"gen-1763510143-56NWyqSVPHgAaANERd1B" 
upstream_id(null)
total_cost0.0201175
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio" 

Evaluation details

Result Evaluator Details Meta Data
87.8283% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
08
19
29
310
410
510
610
710
810
910