Run: 2026-02-16-01KHM5QH9MV0HKZJDCS3N6Q2SY

Run Details

Duration:
14.4s
Cost:
$0.000398
Provider:
DeepInfra

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 mansion loomed under a pale moon, its windows dark and silent like unblinking eyes. A faint breeze carried whispers through the trees, rustling leaves as shadows danced on the gravel path. Inside, the grand foyer was eerily still, the chandelier casting fractured light on the polished marble floor. A single envelope lay on the hall table, its edges crisp and unopened, bearing no name or address. Footsteps echoed faintly upstairs, slow and deliberate, followed by the faint creak of a door hinge. The clock in the study struck midnight, its soft chimes reverberating through the empty halls like distant bells. A faint metallic scent lingered in the air, sharp and unfamiliar, mingling with the scent of aged wood. The library door stood ajar, a single candle flickering on the desk, its wax pooling slowly. Papers were scattered across the table, some bearing hurried handwriting, others torn and crumpled into tight balls. A wine glass rested on the edge of the desk, its contents untouched, faintly gleaming in the candlelight. The carpet beneath the desk was stained with something dark and wet, its edges spreading slowly outward. A broken pen lay nearby, its ink smeared across the floor in jagged, uncontrolled strokes. Outside, the wind picked up, rattling the windows as if trying to force its way inside. Upstairs, a door slammed shut abruptly, the sound sharp and final, cutting through the oppressive silence. Downstairs, the clock chimed again, its tone now harsh and discordant, as if mocking the stillness. A faint groan echoed from the study, low and guttural, fading quickly into the heavy air. The candle on the desk flickered once, then extinguished, plunging the room into darkness save for the moonlight. Footsteps descended the staircase, slow and uneven, their rhythm broken by occasional pauses and faint shuffling. At the foot of the stairs, a hand emerged from the shadows, trembling faintly before collapsing onto the floor. The mansion stood silent once more, its secrets buried deep within its walls, waiting for someone to uncover them.
created_at"2026-02-16T21:29:46.503155+00:00" 2/16/2026, 9:29:46 PM
model"deepseek/deepseek-chat-v3"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency188
moderation_latency(null)
generation_time14375
tokens_prompt46
tokens_completion519
native_tokens_prompt38
native_tokens_completion433
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)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
usage0.00039753
router(null)
provider_responses
0
id"chatcmpl-RnZ0KweEtnnTUZk51UYrawBi"
status200
is_byokfalse
latency40
endpoint_id"5294d55f-9012-496b-8f22-8cc919432dcd"
provider_name"DeepInfra"
model_permaslug"deepseek/deepseek-chat-v3"
api_type"completions"
id"gen-1771277370-xD9iDRA92voQYuotb5Ey"
upstream_id"chatcmpl-RnZ0KweEtnnTUZk51UYrawBi"
total_cost0.00039753
cache_discount(null)
upstream_inference_cost0
provider_name"DeepInfra"

Evaluation details

Result Evaluator Details Meta Data
9.6826% Matches word count n/a
neededCleanfalse
sentences20
wordCounts
015
117
217
318
416
518
618
716
817
918
1017
1115
1216
1316
1416
1516
1618
1716
1819
1919