Run: 2026-09-10-01M25DZ57TB1FGPAG948FWFER7

Run Details

Duration:
16.7s
Cost:
$0.002531
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
The rain hammered the windshield as Detective Mara Voss quietly parked outside the crumbling Victorian mansion on Blackthorn Hill tonight. A single light burned upstairs, and the front door swayed open like a dark mouth waiting invitingly for her there. Inside, the grandfather clock had stopped at midnight, its pendulum frozen above a body sprawled across the bloody Persian rug. The victim lay with eyes open, staring at the ceiling as if reading a final silent accusation written in dust. A shattered wine glass glittered beside the corpse, and crimson drops led toward the shadowed hallway beyond the open doorway. Mara stepped forward, her breath fogging the cold air, while her hand slowly drifted toward the holster at her side. Somewhere above, a floorboard creaked, proving the killer had not fled but waited, watching her every move in patient silence. She whispered, "Show yourself," and the mansion answered with a low, grinding laugh somewhere from deep within its ancient walls.
created_at"2026-09-10T10:31:43.614Z" 9/10/2026, 10:31:43 AM
model"deepseek/deepseek-v4.1-flash-20260910"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency492
moderation_latency(null)
generation_time16688
tokens_prompt46
tokens_completion4142
native_tokens_prompt65
native_tokens_completion4202
native_tokens_completion_images(null)
native_tokens_reasoning4005
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)
usage0.00253095
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1789036303-Ki1WPZllLx6R0yKmGGrM"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1789036303-Ds1mQ5yEl3d7V0VkOb54"
upstream_id"25b89e18-9127-442d-a0a0-50dde5bc97e2"
provider_responses
0
endpoint_id"fd104bc8-535a-4d31-a847-a8e402e86a02"
id"25b89e18-9127-442d-a0a0-50dde5bc97e2"
is_byokfalse
latency339
model_permaslug"deepseek/deepseek-v4.1-flash-20260910"
provider_name"DeepSeek"
status200
total_cost0.00253095
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
sentences8
wordCounts
020
120
220
320
420
520
620
720