Run: 2026-04-25-01KQ2E8AGAWV7Q8AVZF9PFYV7S

Run Details

Duration:
8.6s
Cost:
$0.000237
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
0.29% 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 fell in relentless sheets against the tall windows of the old manor house that evening. A single gunshot cracked through the storm’s roar, sharp and sudden as a snapped bone. Lady Margaret collapsed onto the Persian rug, her silk gown blooming with brilliant crimson roses. Every guest in the drawing room froze, their faces pale masks of disbelief and dawning horror. The detective, a quiet man with tired eyes, knelt beside her still and lifeless form. He noted the locked door, the open window, and the faint scent of jasmine in the air. No one could have entered or left that room without being seen by the entire party. Yet the silver candlestick on the mantel held a single, still-warm fingerprint that wasn’t hers.
created_at"2026-04-25T13:46:20.557Z" 4/25/2026, 1:46:20 PM
model"deepseek/deepseek-v4-pro-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1146
moderation_latency(null)
generation_time8548
tokens_prompt46
tokens_completion307
native_tokens_prompt39
native_tokens_completion253
native_tokens_completion_images(null)
native_tokens_reasoning97
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"
usage0.000237075
router(null)
provider_responses
0
endpoint_id"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id"dd54fa45-a183-4323-957e-2aa3485f8b32"
is_byokfalse
latency278
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-1777124780-CbPsWC1uIE5gcV6SS40Z"
session_id(null)
api_type"completions"
id"gen-1777124780-8SkwTBqO66lK95z1ij80"
upstream_id"dd54fa45-a183-4323-957e-2aa3485f8b32"
total_cost0.000237075
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
0.29% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
017
115
215
316
415
517
616
715