Run: 2026-04-25-01KQ2E2PE6CJS7TB5JAV9FBM0B

Run Details

Duration:
2.3s
Cost:
$0.000036
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
0.01% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The antique grandfather clock struck eleven, its bronze pendulum swaying like a judgmental pendulum. Rain lashed the stained-glass window, distorting the garden’s silhouette into a watery bruise. A single leather glove lay upon the hearth, its fingers curled as if grasping for air. The body was discovered when the housekeeper entered with a tray of tea. Professor Ashworth’s monocle had shattered beside his outstretched, unmoving, elegant hand. A half-finished letter whispered secrets from the desk, ink bleeding into the grain.
created_at"2026-04-25T13:43:16.17Z" 4/25/2026, 1:43:16 PM
model"deepseek/deepseek-v4-flash-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency563
moderation_latency(null)
generation_time2262
tokens_prompt46
tokens_completion135
native_tokens_prompt39
native_tokens_completion109
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"
usage0.00003598
router(null)
provider_responses
0
endpoint_id"722e0746-2034-4d6e-a08f-e6271849ee9e"
id"4d9e061d-8990-4551-8269-69cb4d8d69ef"
is_byokfalse
latency273
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-1777124596-rU2M3mCuloNocZSXJXY6"
session_id(null)
api_type"completions"
id"gen-1777124596-C65ifbKPej9xsfhiGy5u"
upstream_id"4d9e061d-8990-4551-8269-69cb4d8d69ef"
total_cost0.00003598
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
0.01% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
014
113
216
313
411
513