NC Bench
Overview
About
Tests
Models
Vendors
Compare
Run: 2026-02-25-01KJ954X1J825HVKNYF5XT171D
Run Details
Model:
Gemini 2.5 Flash Lite (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
5.0s
Cost:
$0.000542
Provider:
Google AI Studio
Evaluation summary
Score
Evaluator
Details Link
54.70%
Matches word count
(details)
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
The storm raged outside, hammering rain against the ancient windows of Blackwood Manor with unrelenting, furious force. Inside, however, a chilling silence had fallen over the grand ballroom, broken only by the creak of settling timbers. Lord Ashworth lay sprawled near the untouched mahogany table, his silk smoking jacket stained with crimson, a profound stillness upon him. A single, ornate letter opener protruded from his chest, glinting dully in the weak light filtering through the heavy velvet curtains. Inspector Davies stepped carefully over the Persian rug, his keen eyes scanning the scene for any detail others might have missed. The air hung thick with the scent of expensive perfume mixed strangely with the metallic tang of newly spilled, unfortunate blood. No signs of forced entry disturbed the solid oak doors, suggesting the killer was certainly someone known intimately to the household. A forgotten teacup sat upon a nearby side table, its contents still warm, betraying a recent, unexpected visitor’s presence. The terrified butler wrung his trembling hands, his face a mask of pale horror at the terrible event he had witnessed. This wealthy recluse, known for his eccentric habits, now rested eternally, a dark mystery veiled by family secrets and old money.
created_at
"2026-02-25T01:03:23.192Z"
2/25/2026, 1:03:23 AM
model
"google/gemini-2.5-flash-lite"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1012
moderation_latency
(null)
generation_time
4931
tokens_prompt
46
tokens_completion
892
native_tokens_prompt
38
native_tokens_completion
1346
native_tokens_completion_images
0
native_tokens_reasoning
1107
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
0.0005422
router
(null)
provider_responses
0
endpoint_id
"ce839073-aa24-4f29-8358-15b319bd05ec"
is_byok
false
latency
1012
model_permaslug
"google/gemini-2.5-flash-lite"
provider_name
"Google AI Studio"
status
200
api_type
"completions"
id
"gen-1771981403-VIMWaOBzfa9d8ZXAQcr9"
upstream_id
(null)
total_cost
0.0005422
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
54.70%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
17
1
19
2
21
3
21
4
21
5
21
6
21
7
19
8
21
9
21