Run: 2026-04-25-01KQ2HAZQ9NSXM87B7DC63RBHY

Run Details

Duration:
57.8s
Cost:
$0.002405
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 rain fell in slick, silver sheets against the glass. Detective Harper pulled his coat tighter against the bitter chill. A single desk lamp cast long shadows across the room. He stared at the body sprawled on the Persian rug. The dead woman clutched a white lily in her hand. Her unseeing eyes reflected the harsh flickering neon sign outside. He knelt to examine the bruised skin of her wrist. A faint scent of jasmine clung to her silk dress. Then he noticed the small, torn corner of a photograph. It was wedged beneath her sharp, perfectly manicured blood-red fingernail. The clock on the mantelpiece ticked loudly, counting out seconds. Harper knew this quiet murder would speak volumes very soon.
created_at"2026-04-25T14:40:13.549Z" 4/25/2026, 2:40:13 PM
model"deepseek/deepseek-v4-pro-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1503
moderation_latency(null)
generation_time57673
tokens_prompt46
tokens_completion2668
native_tokens_prompt39
native_tokens_completion2745
native_tokens_completion_images(null)
native_tokens_reasoning2595
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"
usage0.002405115
router(null)
provider_responses
0
endpoint_id"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id"231564e7-9932-4d6e-8c3c-01484b0d50e0"
is_byokfalse
latency293
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-1777128013-xPGLsvUqFPN2si0JfFuA"
session_id(null)
api_type"completions"
id"gen-1777128013-sP2BDcUqxxMLgU8a7evC"
upstream_id"231564e7-9932-4d6e-8c3c-01484b0d50e0"
total_cost0.002405115
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
sentences12
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110