Run: 2026-04-25-01KQ2EDZP7DASPK8SJ7RZBK37G

Run Details

Duration:
6.5s
Cost:
$0.000230
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
88.22% 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 clock struck midnight, its chime echoing hollowly. Rain lashed against the library's tall, frosted window panes. Detective Miles stared down at the body on the floor. A single crimson rose rested upon the victim's still chest. There were no signs of struggle, no overturned furniture nearby. The only clue was a faint scent of jasmine perfume. He knelt, examining the ornate silver locket clutched tightly. Inside, a faded photograph showed a smiling, unfamiliar woman. "Sir, the doors were locked from the inside," said Collins. "Impossible," Miles whispered, "this room has no secret passages." Someone had vanished into thin air, leaving only silent questions.
created_at"2026-04-25T13:49:26.091Z" 4/25/2026, 1:49:26 PM
model"deepseek/deepseek-v4-pro-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency985
moderation_latency(null)
generation_time6437
tokens_prompt46
tokens_completion297
native_tokens_prompt39
native_tokens_completion245
native_tokens_completion_images(null)
native_tokens_reasoning102
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"
usage0.000230115
router(null)
provider_responses
0
endpoint_id"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id"321702d8-8957-4f34-8ac1-ada96ee02b60"
is_byokfalse
latency292
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-1777124966-sbXTJ8JA2CP7e7oulyqa"
session_id(null)
api_type"completions"
id"gen-1777124966-rVEU2Jjt3FEm1SR2nRYF"
upstream_id"321702d8-8957-4f34-8ac1-ada96ee02b60"
total_cost0.000230115
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
88.22% Matches word count n/a
neededCleanfalse
sentences11
wordCounts
09
19
210
310
410
510
69
79
810
99
1010