Run: 2026-04-25-01KQ2HWTVTVCXK11VP3RN9T8RP

Run Details

Duration:
3.3s
Cost:
$0.000057
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
73.06% 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-slicked cobblestones gleamed under the dim streetlights. A single set of footprints led to the library door. Inside, the grandfather clock chimed twelve slow, mournful tolls. Lord Ashworth lay sprawled across his mahogany desk. A silver letter opener protruded from his white shirt. The only witness was a silent, sleeping tabby cat. Detective Harding knelt to examine the victim's cold hand. A faint scent of lavender hung in the stale air. He noticed a single, disturbed volume on the shelf. The book lay open to a page about forgotten poisons.
created_at"2026-04-25T14:49:58.399Z" 4/25/2026, 2:49:58 PM
model"deepseek/deepseek-v4-flash-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency574
moderation_latency(null)
generation_time3193
tokens_prompt46
tokens_completion206
native_tokens_prompt39
native_tokens_completion185
native_tokens_completion_images(null)
native_tokens_reasoning51
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"
usage0.00005726
router(null)
provider_responses
0
endpoint_id"722e0746-2034-4d6e-a08f-e6271849ee9e"
id"c23e6cce-1465-4dc4-b380-caa43807fa74"
is_byokfalse
latency282
model_permaslug"deepseek/deepseek-v4-flash-20260423"
provider_name"DeepSeek"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777128598-j7eD09Oysf6JT0P1NXyT"
session_id(null)
api_type"completions"
id"gen-1777128598-2a6l5q6yUKV1jEddWBwx"
upstream_id"c23e6cce-1465-4dc4-b380-caa43807fa74"
total_cost0.00005726
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
73.06% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
08
110
29
38
49
59
69
710
89
910