Run: 2026-04-25-01KQ2EBBPAJGJ3M2ANYAZJY8V0

Run Details

Model:
DeepSeek V4 Flash
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
1.9s
Cost:
$0.000032
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
0.00% 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 rain-slicked cobblestones gleamed under the gas lamps' hazy, amber glow. A single, black umbrella lay crumpled beside the iron park bench. Detective Harding knelt, noting the upturned collar and the single, pristine glove. The body held no signs of struggle, just a peaceful, unnatural stillness. A faint scent of lilies and copper hung in the cold air. Across the alley, a silent clock tower struck midnight with a hollow chime.
created_at"2026-04-25T13:48:00.077Z" 4/25/2026, 1:48:00 PM
model"deepseek/deepseek-v4-flash-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency510
moderation_latency(null)
generation_time1814
tokens_prompt46
tokens_completion109
native_tokens_prompt39
native_tokens_completion96
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"
usage0.00003234
router(null)
provider_responses
0
endpoint_id"722e0746-2034-4d6e-a08f-e6271849ee9e"
id"f1d3f4d3-2653-437e-8d52-ea75a19c6b18"
is_byokfalse
latency276
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-1777124880-1qNsUEPXXkmhcZrBU1Wa"
session_id(null)
api_type"completions"
id"gen-1777124880-oRO9mt08ktVWc4969CbX"
upstream_id"f1d3f4d3-2653-437e-8d52-ea75a19c6b18"
total_cost0.00003234
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
0.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
011
111
212
312
412
513