Run: 2026-04-25-01KQ2E5YYW2M126GY1CGH6XMRS

Run Details

Duration:
5.8s
Cost:
$0.000181
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
0.00% 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
The rain fell in heavy sheets against the old Victorian manor’s darkened parlor windows. Detective Marsh peeled off his soaked trench coat and hung it on the brass hook. A single crystal chandelier cast trembling light across the bloodstained Persian rug beneath them. The victim lay perfectly still, one diamond earring missing from her pale, lifeless lobe. Constable Hale cleared his throat and flipped open his tiny spiral notebook with shaking hands. “Her name is Eleanor Vance,” he whispered, “and no one heard the gunshot over the storm.” Marsh knelt and examined a single silver locket clutched tightly in her rigid fingers. Inside, a tiny photograph of a smiling stranger had been carefully scratched beyond recognition. The locked conservatory windows suggested the killer somehow vanished without leaving any logical exit. Marsh stared at the impossible scene and realized this murder was only the calculated beginning.
created_at"2026-04-25T13:45:03.2Z" 4/25/2026, 1:45:03 PM
model"deepseek/deepseek-v4-pro-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1327
moderation_latency(null)
generation_time5339
tokens_prompt46
tokens_completion248
native_tokens_prompt39
native_tokens_completion188
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.000180525
router(null)
provider_responses
0
endpoint_id"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id"4a962d4a-dfc1-4f30-a3b0-0de4ff98fdb6"
is_byokfalse
latency399
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-1777124703-DAnqpKXHJZqkHkbt2CJ5"
session_id(null)
api_type"completions"
id"gen-1777124703-CVz2qNp9Hx2a09eHofvE"
upstream_id"4a962d4a-dfc1-4f30-a3b0-0de4ff98fdb6"
total_cost0.000180525
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
0.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
014
115
214
314
415
516
614
714
814
915