Run: 2026-04-25-01KQ2GS6GTH244AW6QNMHJC1BN

Run Details

Duration:
3.0s
Cost:
$0.000053
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
1.70% 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 a single, sputtering gaslamp’s amber glow. A crumpled velvet glove lay near the wrought-iron gate, its fingers pointing toward the house. Dr. Alistair Finch paused, his umbrella dripping a steady rhythm onto his polished leather shoes. The front door stood slightly ajar, whispering a silent invitation into the darkened foyer within. Inside, a grandfather clock struck eleven, its chime swallowed by the thick, musty air. On the Persian rug, a spilled inkwell had formed a black, spreading pool like a wound. He stepped forward, and the floorboard creaked, a sharp protest beneath his careful weight. Then he saw her—a figure slumped in the high-backed chair, a crimson stain blooming across her gown.
created_at"2026-04-25T14:30:30.686Z" 4/25/2026, 2:30:30 PM
model"deepseek/deepseek-v4-flash-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency533
moderation_latency(null)
generation_time2938
tokens_prompt46
tokens_completion197
native_tokens_prompt39
native_tokens_completion170
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"
usage0.00005306
router(null)
provider_responses
0
endpoint_id"722e0746-2034-4d6e-a08f-e6271849ee9e"
id"5694462b-d350-49aa-aa6b-eb8117d03df0"
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-1777127430-WyIbDZpIrSCxtm5G1MIs"
session_id(null)
api_type"completions"
id"gen-1777127430-p0mF5Qbd6xeMpXW4KiCT"
upstream_id"5694462b-d350-49aa-aa6b-eb8117d03df0"
total_cost0.00005306
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
1.70% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
012
115
215
315
414
516
614
718