Run: 2026-04-25-01KQ2FRE31FMTXQB3S698ZM58V

Run Details

Duration:
8m 50s
Cost:
$0.000251
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
0.43% 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 grand estate's library held the stillness of a held breath before a terrible scream. Detective Inspector Ada Cross stepped over the threshold, her keen eyes missing absolutely nothing at all. The body of Lord Pemberton lay crumpled near the cold fireplace, one hand clutching a torn page. A single crystal glass of port rested on the mahogany desk, its deep red contents entirely undisturbed. Outside the tall window, a raven watched silently, its black eye reflecting the grim scene within. The air smelled faintly of cigar smoke, old leather, and the metallic tang of recently spilled blood. Cross noted the clock on the mantel had stopped precisely at eleven forty-seven, its pendulum still. She turned to the trembling butler and asked quietly, "Who else was in the house tonight?"
created_at"2026-04-25T14:21:18.164Z" 4/25/2026, 2:21:18 PM
model"deepseek/deepseek-v4-pro-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1227
moderation_latency(null)
generation_time9293
tokens_prompt46
tokens_completion329
native_tokens_prompt39
native_tokens_completion269
native_tokens_completion_images(null)
native_tokens_reasoning101
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"
usage0.000250995
router(null)
provider_responses
0
endpoint_id"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id"edfd5d8c-ee32-46f7-b658-62b41c62b15e"
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-1777126878-5poq8f0wrbFxRgYvsLFK"
session_id(null)
api_type"completions"
id"gen-1777126878-zwyNPBL2ToX042zTfFkW"
upstream_id"edfd5d8c-ee32-46f7-b658-62b41c62b15e"
total_cost0.000250995
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
0.43% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
015
116
217
317
416
517
616
716