Run: 2026-04-25-01KQ2DRGKCSZQVTC34KFWVMRVG

Run Details

Duration:
4.3s
Cost:
$0.000132
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
97.41% 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 heavy rain obscured the mansion’s gothic silhouette in darkness. A frantic knock shattered the silence of the sprawling estate. The butler’s trembling hand twisted the cold, ornate brass handle. She stood drenched, mascara streaking her pale, horror-stricken face. Her lips moved soundlessly before the terrible words finally came. “He is dead, a knife buried deep within his back.” The library clock immediately began to chime the midnight hour. Inside, the celebrated criminologist calmly set down his whiskey glass. His sharp eyes missed nothing, taking in her muddy hem. The brilliant detective knew this perfect crime was his now.
created_at"2026-04-25T13:37:42.512Z" 4/25/2026, 1:37:42 PM
model"deepseek/deepseek-v4-pro-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency765
moderation_latency(null)
generation_time4269
tokens_prompt46
tokens_completion170
native_tokens_prompt39
native_tokens_completion132
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"
usage0.000131805
router(null)
provider_responses
0
endpoint_id"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id"fd489d2b-6778-400d-beaa-ede275032df1"
is_byokfalse
latency276
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-1777124262-qdGxcachmiyulGnIa7Op"
session_id(null)
api_type"completions"
id"gen-1777124262-AG5JBVKbr1TVAEaiyRHz"
upstream_id"fd489d2b-6778-400d-beaa-ede275032df1"
total_cost0.000131805
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
97.41% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
39
410
510
610
710
810
910