Run: 2026-04-25-01KQ2E0B2XD2W96AYJWM11N0T4

Run Details

Duration:
31.4s
Cost:
$0.001237
Provider:
DeepSeek

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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The old mansion stood silent beneath the stormy midnight sky. Inside, a single candle flickered in the dusty library room. Detective Harris examined the body sprawled across the Persian rug. A silver dagger protruded from the victim's chest, still gleaming. No signs of forced entry, just an open window nearby. Rain lashed against the glass, masking any sounds of struggle. The victim's glass of wine remained untouched on the desk. A cryptic note lay crumpled in his cold, clenched fist. The note read: "The past never dies; it only waits." Harris narrowed his eyes, sensing the killer's lingering presence nearby. This case would unravel secrets buried for twenty dark years.
created_at"2026-04-25T13:41:59.009Z" 4/25/2026, 1:41:59 PM
model"deepseek/deepseek-v4-pro-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency900
moderation_latency(null)
generation_time31371
tokens_prompt46
tokens_completion1386
native_tokens_prompt39
native_tokens_completion1402
native_tokens_completion_images(null)
native_tokens_reasoning1261
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"
usage0.001236705
router(null)
provider_responses
0
endpoint_id"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id"ea92ebe1-55bb-4ab9-9035-1ba592fb3804"
is_byokfalse
latency285
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-1777124519-n1J9r2jLh4Enkng2BaNg"
session_id(null)
api_type"completions"
id"gen-1777124519-EKbOieUmWN50UetTtzGp"
upstream_id"ea92ebe1-55bb-4ab9-9035-1ba592fb3804"
total_cost0.001236705
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences11
wordCounts
010
110
210
310
410
510
610
710
810
910
1010