NC Bench
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Run: 2026-02-16-01KHM62DB6M28AD8HMVYXT2TFS
Run Details
Model:
DeepSeek V3 (2024-12-26)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
11.9s
Cost:
$0.000263
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 grand oak doors creaked open, revealing the dimly lit library where shadows danced along the ancient bookshelves. Detective Clara Hayes stepped inside, her polished shoes echoing softly against the marble floor, as she surveyed the scene with sharp, calculating eyes. A body lay sprawled near the fireplace, a crimson stain spreading across the once-pristine Persian rug, silent testament to the violence that had unfolded. The victim, a man in his late forties, wore a tailored suit now crumpled and torn, his face frozen in an expression of surprise. Clara knelt beside him, her gloved fingers brushing against a silver letter opener lodged deep within his chest, its intricate design gleaming faintly in the firelight. The air smelled of smoke and something metallic, mingling with the faint scent of expensive cologne lingering on the victim’s collar. A shattered teacup lay nearby, its delicate porcelain fragments scattered across the floor, dark liquid pooling around them like spilled secrets. Clara’s gaze drifted to the mahogany desk, where a half-written letter sat untouched, the ink still fresh, the pen discarded hastily beside it. The room was eerily silent, save for the distant ticking of a clock, its rhythmic cadence marking the passage of irretrievable time. Clara stood, her mind racing as she began to piece together the fragments of a puzzle shrouded in shadows and deceit.
created_at
"2026-02-16T21:35:39.739676+00:00"
2/16/2026, 9:35:39 PM
model
"deepseek/deepseek-chat-v3"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
213
moderation_latency
(null)
generation_time
11843
tokens_prompt
46
tokens_completion
352
native_tokens_prompt
38
native_tokens_completion
282
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
0.00026314
router
(null)
provider_responses
0
id
"chatcmpl-RzJ3p1CMAKdOM81JXqT1sV8Y"
status
200
is_byok
false
latency
76
endpoint_id
"5294d55f-9012-496b-8f22-8cc919432dcd"
provider_name
"DeepInfra"
model_permaslug
"deepseek/deepseek-chat-v3"
api_type
"completions"
id
"gen-1771277727-zL8fFA4YRXPJHBppyGAY"
upstream_id
"chatcmpl-RzJ3p1CMAKdOM81JXqT1sV8Y"
total_cost
0.00026314
cache_discount
(null)
upstream_inference_cost
0
provider_name
"DeepInfra"
Evaluation details
Result
Evaluator
Details
Meta Data
21.0205%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
18
1
23
2
25
3
24
4
26
5
21
6
21
7
24
8
22
9
21