NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-09-03-01M1M22C1X9H6KPW99JAV5A3V2
Run Details
Model:
Hy4 Preview (Reasoning, High)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
2m 54s
Cost:
$0.032252
Provider:
Tencent
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
The storm had battered Blackwood Manor all night, and the old house groaned beneath the wind’s relentless, icy, merciless assault. Detective Eleanor Vance arrived at the tall iron gates just after dawn, her boots sinking into the muddy, shadowed driveway. She was met by a pale maid whose trembling hands clutched a fine silver tray of untouched, steaming morning tea. ‘The master is dead,’ the pale maid whispered, her trembling voice barely louder than the cold, dark, distant rain outside. Detective Eleanor Vance stepped into the dark grand hall and saw the body sprawled across the expensive, bloodstained Persian rug. A cruel, jeweled dagger protruded from his still chest, and a single long candle flickered on the dusty marble mantle. No muddy footprints marred the polished wooden floor except for a single set leading straight toward the tall open window. Detective Vance narrowed her sharp eyes, certain that this lonely stormy night held secrets far darker than simple, quiet death.
created_at
"2026-09-03T16:36:40.643Z"
9/3/2026, 4:36:40 PM
model
"tencent/hy4-preview-20260827"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1435
moderation_latency
(null)
generation_time
173600
tokens_prompt
46
tokens_completion
12119
native_tokens_prompt
56
native_tokens_completion
12877
native_tokens_completion_images
(null)
native_tokens_reasoning
12661
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
0.032252081
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer
(null)
request_id
"req-1788453400-KXoSdXbm2DPoEzQpUvN6"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1788453400-jn1hgJWOJoXF39zfcvAk"
upstream_id
"068b2c5c-f469-4ffa-b61d-8fb1b5f5c24e"
provider_responses
0
endpoint_id
"ad2a4093-3d2a-41d9-adf1-8b499ac8445d"
id
"068b2c5c-f469-4ffa-b61d-8fb1b5f5c24e"
is_byok
false
latency
1435
model_permaslug
"tencent/hy4-preview-20260827"
provider_name
"Tencent"
status
200
total_cost
0.032252081
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Tencent"
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
8
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20
6
20
7
20