NC Bench
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Run: 2026-02-16-01KHM5QH9MV0HKZJDCS3N6Q2SY
Run Details
Model:
DeepSeek V3 (2024-12-26)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
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
Messages
Meta
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_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
188
moderation_latency
(null)
generation_time
14375
tokens_prompt
46
tokens_completion
519
native_tokens_prompt
38
native_tokens_completion
433
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.00039753
router
(null)
provider_responses
0
id
"chatcmpl-RnZ0KweEtnnTUZk51UYrawBi"
status
200
is_byok
false
latency
40
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_cost
0.00039753
cache_discount
(null)
upstream_inference_cost
0
provider_name
"DeepInfra"
Evaluation details
Result
Evaluator
Details
Meta Data
9.6826%
Matches word count
n/a
neededClean
false
sentences
20
wordCounts
0
15
1
17
2
17
3
18
4
16
5
18
6
18
7
16
8
17
9
18
10
17
11
15
12
16
13
16
14
16
15
16
16
18
17
16
18
19
19
19