NC Bench
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Run: 2026-02-16-01KHM60ZJJ5B784DCWBG2BF120
Run Details
Model:
DeepSeek V3.1
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
4.8s
Cost:
$0.000146
Provider:
AtlasCloud
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 rain fell in relentless sheets against the ancient manor's leaded windows. A single guttering candle cast long, dancing shadows across the library. Detective Inspector Miles shoved his cold hands deeper into his worn overcoat pockets. He stared down at the body lying so still on the rug. The old man’s face was a frozen mask of pure surprise. There was no murder weapon found anywhere within the vast room. Only a single, overturned glass and a forgotten book remained nearby. The heavy oak door creaked open behind the silent inspector. A tall, severe-looking butler stood there, his face completely unreadable. “The family is gathered in the drawing room, as you requested, sir.”
created_at
"2026-02-16T21:34:45.31496+00:00"
2/16/2026, 9:34:45 PM
model
"deepseek/deepseek-chat-v3.1"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1168
moderation_latency
(null)
generation_time
4585
tokens_prompt
65
tokens_completion
174
native_tokens_prompt
40
native_tokens_completion
141
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
0.00014595
router
(null)
provider_responses
0
status
429
is_byok
false
latency
39
endpoint_id
"012f7d1f-23d4-4d03-9aa3-432d8ad82757"
provider_name
"DeepInfra"
model_permaslug
"deepseek/deepseek-chat-v3.1"
1
id
"ff8e25f9c89f4eec9144808c3801e593"
status
200
is_byok
false
latency
1168
endpoint_id
"0bfe3535-ed02-47ea-a98f-60cc8af4fab2"
provider_name
"AtlasCloud"
model_permaslug
"deepseek/deepseek-chat-v3.1"
api_type
"completions"
id
"gen-1771277680-ptfznNi5cUJyMCOIp4Rv"
upstream_id
"ff8e25f9c89f4eec9144808c3801e593"
total_cost
0.00014595
cache_discount
(null)
upstream_inference_cost
0
provider_name
"AtlasCloud"
Evaluation details
Result
Evaluator
Details
Meta Data
0.0000%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
12
1
11
2
13
3
12
4
11
5
11
6
11
7
10
8
11
9
12