Run: 2025-11-18-01KACPBDDSHQ1G476YNB02WKCG

Run Details

Model:: Gemini 2.5 Pro
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 17.6s
Cost:: $0.021507
Provider:: Google AI Studio

Evaluation summary

Score	Evaluator	Details Link
96.30%	Matches word count	(details)

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

A cold autumn rain lashed against the tall library windows.
His worn trench coat dripped water onto the Persian carpet.
The master of this grand house was now entirely dead.
A single dark stain bloomed across his crisp white shirt.
His family stood huddled by the doorway, faces pale with shock.
A grandfather clock ticked loudly, each second a heavy accusation.
An overturned wine glass had bled red onto the carpet.

Evaluation details

Result

Evaluator

Details

Meta Data

96.30%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	10
1	10
2	10
3	10
4	11
5	10
6	10

created_at	"2025-11-18T23:56:28.972809+00:00" 11/18/2025, 11:56:28 PM
model	"google/gemini-2.5-pro"
app_id	182717
external_user	(null)
streamed	true
cancelled	false
latency	1931
moderation_latency	(null)
generation_time	17574
tokens_prompt	42
tokens_completion	802
native_tokens_prompt	38
native_tokens_completion	2146
native_tokens_completion_images	0
native_tokens_reasoning	2068
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	0.0215075
api_type	"completions"
id	"gen-1763510171-42q154LELgaXfSEZMnoS"
upstream_id	(null)
total_cost	0.0215075
cache_discount	(null)
upstream_inference_cost	0
provider_name	"Google AI Studio"