NC Bench
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Run: 2026-02-16-01KHM5W854PEWB5XCGA1QYGC6Q
Run Details
Model:
DeepSeek V3.1
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
8.5s
Cost:
$0.000129
Provider:
SiliconFlow
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 marble clock struck midnight with a slow, deliberate chime throughout the dark, silent mansion. Detective John Hale stepped across the threshold into the cavernous, shadow-filled foyer, his expression grim. One single, powerful beam from his heavy flashlight cut through the oppressive, dusty gloom ahead. It illuminated a terrible scene: Lord Ashworth’s body lay sprawled upon the Persian rug. A silver dagger, ornate and cruel, protruded from his motionless, starched white shirtfront quite obviously. There would be no peaceful sleep for anyone within these old, cold walls tonight.
created_at
"2026-02-16T21:32:14.108701+00:00"
2/16/2026, 9:32:14 PM
model
"deepseek/deepseek-chat-v3.1"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1726
moderation_latency
(null)
generation_time
8481
tokens_prompt
65
tokens_completion
150
native_tokens_prompt
42
native_tokens_completion
118
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
0.00012934
router
(null)
provider_responses
0
id
"019c685e259bf5b788eb2cca34b7a643"
status
200
is_byok
false
latency
1726
endpoint_id
"5d5c9c1d-af0d-4e4a-8aee-c5cd2b3883f3"
provider_name
"SiliconFlow"
model_permaslug
"deepseek/deepseek-chat-v3.1"
api_type
"completions"
id
"gen-1771277525-dKDimDx4oxQTz3ReENY4"
upstream_id
"019c685e259bf5b788eb2cca34b7a643"
total_cost
0.00012934
cache_discount
(null)
upstream_inference_cost
0
provider_name
"SiliconFlow"
Evaluation details
Result
Evaluator
Details
Meta Data
0.0113%
Matches word count
n/a
neededClean
false
sentences
6
wordCounts
0
16
1
16
2
15
3
14
4
15
5
14