NC Bench
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Run: 2026-02-16-01KHM5BHHVVT0807AYBSFQ6W2Y
Run Details
Model:
DeepSeek V3.1
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
7.2s
Cost:
$0.000273
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 upon the old, decaying Hastings Manor. Detective Miles arrived with a weary sigh and a heavy heart. The butler, a skeletal man named Graves, opened the creaking front door. His face was a pale, emotionless mask in the dim foyer light. "The body is in the library, sir," he whispered with chilling calm. Miles wiped his wet shoes on the threadbare rug, observing everything silently. The house felt unnaturally cold, steeped in shadows and unspoken secrets. He followed the silent butler down a long, darkly paneled hallway. A single portrait of a severe-looking woman watched their progress with disdain. They finally reached a pair of ornately carved mahogany library doors. Graves pushed them open to reveal the dreadful scene inside. Lord Ashworth lay sprawled on the Persian rug near the fireplace. A single, ornate letter opener protruded from his motionless chest. A look of sheer surprise was frozen upon his aristocratic face. A half-finished glass of brandy sat undisturbed on the desk. Miles noticed the windows were all securely locked from the inside. "Who found the body, and at what precise time, Graves?" The butler’s eyes shifted nervously toward the grand staircase above. "That would be Lady Ashworth, sir, just before the clock struck ten."
created_at
"2026-02-16T21:23:05.258399+00:00"
2/16/2026, 9:23:05 PM
model
"deepseek/deepseek-chat-v3.1"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
553
moderation_latency
(null)
generation_time
7122
tokens_prompt
65
tokens_completion
325
native_tokens_prompt
40
native_tokens_completion
275
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
0.00027325
router
(null)
provider_responses
0
id
"e43cc5cfea104e088b50441f7d3cd3b8"
status
200
is_byok
false
latency
553
endpoint_id
"0bfe3535-ed02-47ea-a98f-60cc8af4fab2"
provider_name
"AtlasCloud"
model_permaslug
"deepseek/deepseek-chat-v3.1"
api_type
"completions"
id
"gen-1771276977-JQeI1EXHsEoTonSLIiDF"
upstream_id
"e43cc5cfea104e088b50441f7d3cd3b8"
total_cost
0.00027325
cache_discount
(null)
upstream_inference_cost
0
provider_name
"AtlasCloud"
Evaluation details
Result
Evaluator
Details
Meta Data
5.5556%
Matches word count
n/a
neededClean
false
sentences
18
wordCounts
0
12
1
11
2
12
3
12
4
12
5
12
6
11
7
11
8
13
9
11
10
10
11
11
12
10
13
11
14
11
15
11
16
20
17
12