Run: 2026-04-25-01KQ2GR60PMHK7V1CPG8QMZ01J

Run Details

Duration:
10.0s
Cost:
$0.000284
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
91.36% 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

AI
The rain fell in slick, relentless sheets against the glass. Detective Vance arrived at the manor just before midnight sharp. A single gunshot had shattered the evening's oppressive, heavy silence. Now the grand foyer buzzed with frantic, hushed, fearful whispers. The victim, Lord Ashworth, lay crumpled near the cold fireplace. His antique clock still ticked loudly into the tense, still air. A crystal glass of brandy sat untouched on the marble ledge. One pristine white glove was conspicuously missing from his hand. Everyone in the family claimed a perfect, unbreakable alibi instantly. Yet the locked study door had no key on either side. Vance noticed a faint smudge of ash on the windowsill. It was going to be a very long, very strange night.
created_at"2026-04-25T14:29:58.894Z" 4/25/2026, 2:29:58 PM
model"deepseek/deepseek-v4-pro-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1050
moderation_latency(null)
generation_time8292
tokens_prompt46
tokens_completion367
native_tokens_prompt39
native_tokens_completion307
native_tokens_completion_images(null)
native_tokens_reasoning144
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"e4092c31-44f0-450e-8d2b-b0bef41a911b"
is_byokfalse
latency288
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-1777127398-HiZtsawCGQDATOX8bqVm"
session_id(null)
api_type"completions"
id"gen-1777127398-owKlIFGFps4YqRQIhujr"
upstream_id"e4092c31-44f0-450e-8d2b-b0bef41a911b"
total_cost0.000284055
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
91.36% Matches word count n/a
neededCleanfalse
sentences12
wordCounts
010
110
210
310
410
511
611
710
810
911
1010
1111