NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-04-25-01KQ2H8JHBPXMT98YME5KQ4W9C
Run Details
Model:
DeepSeek V4 Flash (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
36.1s
Cost:
$0.000053
Provider:
DeepInfra
Evaluation summary
Score
Evaluator
Details Link
0.00%
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
The rain-slicked cobblestones gleamed under flickering gaslight as Detective Clara Hayward arrived. A single, crimson rose lay near the body with no fingerprints or any other clues. The victim wore a silver locket engraved with initials “E.L.”, but it held no photograph. Clara knelt, noticing faint tire tracks leading toward the alley’s shadowy, dead-end wall. A clock tower chimed eleven, yet the time of death remained stubbornly, frustratingly unknown. Her partner, Inspector Royce, whispered that the butler had vanished just moments before the scream.
created_at
"2026-04-25T14:38:54.511Z"
4/25/2026, 2:38:54 PM
model
"deepseek/deepseek-v4-flash-20260423"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
503
moderation_latency
(null)
generation_time
36121
tokens_prompt
46
tokens_completion
193
native_tokens_prompt
39
native_tokens_completion
168
native_tokens_completion_images
(null)
native_tokens_reasoning
45
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"
usage
0.0000525
router
(null)
provider_responses
0
endpoint_id
"934a69f9-bd54-474b-beca-24560f721e12"
id
"a3d282637bb243af8f062da39e4fe45b"
is_byok
false
latency
49
model_permaslug
"deepseek/deepseek-v4-flash-20260423"
provider_name
"DeepInfra"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer
(null)
request_id
"req-1777127934-bGLN75qBHp4102o7kxoe"
session_id
(null)
api_type
"completions"
id
"gen-1777127934-Jmg3EYKUmsWlZa4CH4GV"
upstream_id
"a3d282637bb243af8f062da39e4fe45b"
total_cost
0.0000525
cache_discount
(null)
upstream_inference_cost
0
provider_name
"DeepInfra"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
0.00%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
12
1
15
2
28
3
14
4
15