Run: 2026-09-10-01M25DR5QJ39SP90FQBY1ASTS1

Run Details

Duration:
19.5s
Cost:
$0.003098
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
Cold rain hammered the old mansion windows as Detective Mara Voss stepped into the candlelit foyer exactly at midnight tonight. A butler with trembling hands led her toward the ancient wooden library where the victim waited silently for her arrival. Lord Edgar Blackwood sprawled across the Persian rug, a silver letter opener buried deep in his bloodied cold still chest. The room smelled of expensive cigars, old books, and something faintly metallic that she recognized immediately as fresh spilled blood. A fierce storm raged outside, thunder shaking the glass while every guest claimed complete ignorance of the entire grisly murder. Detective Voss knelt beside the body, noting the missing signet ring and the victim's strangely calm expression on his face. Outside, distant lightning split the sky as a dark hidden figure silently watched from the garden maze's shadowed far edge. When she turned abruptly, the butler was gone, leaving only dark wet footprints leading toward the conservatory's unlocked old door. Mara slowly drew her weapon, following the old trail as thunder masked the sound of a nearby door clicking shut. The silent conservatory waited, oddly humid and dark, its glass walls streaming with cold rain and something like fresh blood.
created_at"2026-09-10T10:27:54.744Z" 9/10/2026, 10:27:54 AM
model"deepseek/deepseek-v4.1-flash-20260910"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1044
moderation_latency(null)
generation_time19171
tokens_prompt46
tokens_completion5182
native_tokens_prompt65
native_tokens_completion5147
native_tokens_completion_images(null)
native_tokens_reasoning4901
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"
service_tier(null)
usage0.00309795
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1789036074-sdpucinXJ77uKj5IOtVv"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1789036074-ALOfPRaNjfjdn1MyK26Y"
upstream_id"5b54add1-a785-454c-a349-f42174895652"
provider_responses
0
endpoint_id"fd104bc8-535a-4d31-a847-a8e402e86a02"
id"5b54add1-a785-454c-a349-f42174895652"
is_byokfalse
latency342
model_permaslug"deepseek/deepseek-v4.1-flash-20260910"
provider_name"DeepSeek"
status200
total_cost0.00309795
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
020
120
220
320
420
520
620
720
820
920