Run: 2026-04-25-01KQ2DVWCR0NYPR9NR7TT7EJVA

Run Details

Duration:
43.2s
Cost:
$0.000985
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
100.00% 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-soaked cobblestones glistened under the dim gaslight as a lone figure hurried past the darkened shops and narrow alleys. He pulled his coat collar tight against the cold wind that howled through the empty street and into the night. A sudden scream pierced the silence, followed by the sound of breaking glass from inside an old abandoned warehouse nearby. He stopped and turned toward the noise, his heart pounding with a sudden cold dread that gripped his chest tightly. He knew he should run away but curiosity and duty drove his feet forward instead toward the dark warehouse entrance.
created_at"2026-04-25T13:39:32.892Z" 4/25/2026, 1:39:32 PM
model"deepseek/deepseek-v4-flash-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency579
moderation_latency(null)
generation_time43105
tokens_prompt46
tokens_completion2927
native_tokens_prompt39
native_tokens_completion3499
native_tokens_completion_images(null)
native_tokens_reasoning3382
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"
usage0.00098518
router(null)
provider_responses
0
endpoint_id"722e0746-2034-4d6e-a08f-e6271849ee9e"
id"6baab0f4-4504-4d9b-a531-679b002918d8"
is_byokfalse
latency275
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-1777124372-qscLLk21hzsWdLl0xdXw"
session_id(null)
api_type"completions"
id"gen-1777124372-a2CN5nom8IUgkGQWxG1E"
upstream_id"6baab0f4-4504-4d9b-a531-679b002918d8"
total_cost0.00098518
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
320
420