Run: 2026-11-11-01M75RZKS7AN1FKFJ4Y5D04M9F

Run Details

Model:
Gemini 4 Carbon (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
23.9s
Cost:
$0.020496
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
100.00% 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

AI
Heavy rain battered the tall gothic windows of Blackwood Manor while thunder rattled the antique crystal glasses inside the study. Lord Arthur lay motionless on the crimson Persian rug with an ornate silver letter opener buried deep within his chest. Detective Inspector Vance knelt beside the cooling corpse, carefully adjusting his wire spectacles to examine the strangely bloodless fatal wound. A single charred playing card rested near the lifeless hand, smelling faintly of expensive French perfume and bitter almond poison. Every heavy oak door had been bolted securely from the inside, leaving no logical escape route for the clever assassin. Downstairs in the grand parlor, six wealthy dinner guests waited nervously, knowing one among them harbored a deadly dark secret.
created_at"2026-11-11T17:02:41.97Z" 11/11/2026, 5:02:41 PM
model"google/gemini-4-carbon-20261110"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4666
moderation_latency(null)
generation_time23908
tokens_prompt46
tokens_completion688
native_tokens_prompt68
native_tokens_completion2036
native_tokens_completion_images0
native_tokens_reasoning1897
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"STOP"
service_tier"default"
usage0.020496
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.22.2; linux; x64))"
http_referer(null)
request_id"req-1794416561-UMZ9TenKUfvfweeSOBcU"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1794416561-FZFPlch2OYLR9yhChYM6"
upstream_id"sp_0asmSCYLw0_gP3MK02Ac"
provider_responses
0
endpoint_id"f0c9681d-e99b-4bcb-8031-752429da222d"
id"sp_0asmSCYLw0_gP3MK02Ac"
is_byokfalse
latency4666
model_permaslug"google/gemini-4-carbon-20261110"
provider_name"Google AI Studio"
status200
total_cost0.020496
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520