Run: 2026-04-25-01KQ2E8YX1DPB1J5PC7DNP70ZH

Run Details

Duration:
8.3s
Cost:
$0.000284
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
0.45% 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
The old manor loomed against the bruised twilight sky, its windows vacant and silently weeping forgotten memories. Detective Inspector Graves crushed his cigarette beneath a polished shoe and approached the iron gate. A single raven cawed from a skeletal oak branch as constables huddled near the carriage house door. The body lay sprawled across the checkered marble floor, one hand clutching a shattered champagne flute. A sapphire brooch pinned to the victim’s lapel sparkled incongruously amid congealing pools of dark blood. Graves noted the faint scent of bitter almonds drifting from the crystal decanter on the mahogany sideboard. Every clock in the silent room had been stopped precisely at eleven forty-seven, mysteriously. The housekeeper sobbed that the library door was locked from the inside, yet no key was found. Graves surveyed the bookshelf and discovered a single volume deliberately pushed out of perfect alignment. “Nobody leaves this property until every last secret is ruthlessly torn from these walls,” he announced.
created_at"2026-04-25T13:46:41.446Z" 4/25/2026, 1:46:41 PM
model"deepseek/deepseek-v4-pro-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency959
moderation_latency(null)
generation_time8114
tokens_prompt46
tokens_completion386
native_tokens_prompt39
native_tokens_completion307
native_tokens_completion_images(null)
native_tokens_reasoning102
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"
usage0.000284055
router(null)
provider_responses
0
endpoint_id"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id"ebcf44b9-1dad-4ea3-96f7-4262597672f1"
is_byokfalse
latency278
model_permaslug"deepseek/deepseek-v4-pro-20260423"
provider_name"DeepSeek"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777124801-i4NqbJcjP7TEnyAXM6Om"
session_id(null)
api_type"completions"
id"gen-1777124801-muy1TCneeYy5FBFb6laS"
upstream_id"ebcf44b9-1dad-4ea3-96f7-4262597672f1"
total_cost0.000284055
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
0.45% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
017
115
217
316
416
517
614
717
815
916