Run: 2026-04-25-01KQ2G105V55FYH1XMRFVHVS7C

Run Details

Duration:
8.5s
Cost:
$0.000263
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
0.13% 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 old manor’s library smelled of leather, rain, and candle wax just starting to melt. Inspector Graves studied the body slumped near the hearth, a crimson stain blooming across her chest. Lightning flared outside the tall arched windows, briefly illuminating the room in harsh silver flashes. A single overturned teacup rested on the Persian rug, its amber contents soaking into the wool. “Everyone must remain exactly where they are until we have thoroughly documented this entire scene,” he announced. Lady Winthrop clutched her pearl necklace tightly, her aristocratic face pale as the drawing room’s marble. The butler stood motionless by the service door, his expression unreadable beneath the low candlelight’s glow. Colonel Hughes cleared his throat rather too loudly, his mustache twitching like a startled woodland animal. “I heard no gunshot, no cry, nothing but the storm’s relentless fury battering the windows,” he declared. Graves knelt down carefully beside the deceased, his eyes tracing the curious absence of any weapon. The victim’s right hand was clenched into a fist, except for her index finger, which pointed deliberately. It aimed directly at the towering bookshelf filled with dusty first editions and forgotten family histories. “Would anyone care to explain why such a prominent philanthropist lies murdered before this fireplace?” Graves asked.
created_at"2026-04-25T14:17:17.759Z" 4/25/2026, 2:17:17 PM
model"deepseek/deepseek-v4-pro-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1309
moderation_latency(null)
generation_time8403
tokens_prompt46
tokens_completion367
native_tokens_prompt39
native_tokens_completion283
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"
usage0.000263175
router(null)
provider_responses
0
endpoint_id"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id"6ca38861-8575-4f61-8c3d-4c12de925335"
is_byokfalse
latency279
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-1777126637-98IkghgL9F1G0Qv5fY70"
session_id(null)
api_type"completions"
id"gen-1777126637-4HCuycvIy4EsHRpOf86C"
upstream_id"6ca38861-8575-4f61-8c3d-4c12de925335"
total_cost0.000263175
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
0.13% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
015
116
215
316
433
516
616
750
816
917