NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-10-20-01M5C6BT7BR6MZQJQ3KBQEY7K2
Run Details
Model:
DeepSeek V4.1 Flash 1017 (Reasoning, High)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
12.9s
Cost:
$0.001313
Provider:
InferenceNet
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
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
Rain tapped the library windows while Inspector Hale carefully studied the dead financier slumped across his large polished mahogany desk. A single brass clock ticked loudly beside the body, and nobody had yet touched the strange bloody silver letter opener. The right hand of the victim clutched a torn page filled with numbers, names, and one ominous handwritten final warning. Outside, the fierce storm rattled every window, but the locked study door offered the frightened guests no easy escape tonight. Inspector Hale knelt slowly, studied the carpet fibers, and noticed three fresh muddy footprints leading toward the heavy velvet curtains. Behind those heavy curtains, a hidden safe hung open, and its missing contents seemed far more dangerous than the corpse. Hale turned toward the silent guests and asked one quiet question that made every pale face in the room flinch.
created_at
"2026-10-20T08:20:36.208Z"
10/20/2026, 8:20:36 AM
model
"deepseek/deepseek-v4.1-flash-20261017"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
289
moderation_latency
(null)
generation_time
12882
tokens_prompt
46
tokens_completion
2727
native_tokens_prompt
39
native_tokens_completion
2620
native_tokens_completion_images
(null)
native_tokens_reasoning
2455
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
service_tier
(null)
usage
0.00131312
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1792484436-tIIyam0UgkCeKYKMbpzy"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1792484436-Nuc2eKMgL3vsKaQo1bfq"
upstream_id
"gv2_Q0MR3l12WlyxVj2XRySAF"
provider_responses
0
endpoint_id
"4231aea9-73af-4a2f-bd14-660b1d8b13b2"
id
"gv2_Q0MR3l12WlyxVj2XRySAF"
is_byok
false
latency
289
model_permaslug
"deepseek/deepseek-v4.1-flash-20261017"
provider_name
"InferenceNet"
status
200
total_cost
0.00131312
cache_discount
(null)
upstream_inference_cost
0
provider_name
"InferenceNet"
response_cache_source_id
(null)
data_region
"global"
workspace_id
"97e315e5-d303-487d-83c1-83180e8a13d4"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
sentences
7
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20
6
20