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Run: 2026-09-03-01M1M20AMJ4NJ7YNCSV3WSGA9R
Run Details
Model:
Hy4 Preview (Reasoning, High)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
2m 57s
Cost:
$0.034941
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
Rain tapped softly against the dusty windowpane late last night. The old mansion stood silent on the foggy hill above. A single lamp burned in the empty hall downstairs tonight. Detective Marie Vega stepped through the heavy oak front door. She shook her umbrella and scanned the gloomy entrance hall. A grandfather clock chimed midnight in the far dark corner. The housekeeper waited by the stairs with a pale face. "In the library," the housekeeper whispered with a trembling voice. Detective Vega followed her quietly down the long dim corridor. The library door stood ajar, spilling light across the floor. Madame Claire Aubert lay motionless on the library's Persian rug. A crimson stain bloomed across the front of her dress. Detective Vega knelt beside the body, her sharp eyes narrowing. Someone had entered the room quietly during her evening tea. A shattered teacup rested on the table right beside her. Detective Vega noticed a small key clutched in her hand. The small key was stained with something dark and metallic. Outside, thunder rolled over the hills like distant war drums. "We are not alone in this house tonight," she said. The housekeeper gasped and pressed herself against the cold wall. Somewhere upstairs, a loose floorboard creaked beneath a careful step. Detective Vega rose and drew her weapon without any hesitation. "Stay behind me," she ordered, moving slowly toward the staircase.
created_at
"2026-09-03T16:35:33.657Z"
9/3/2026, 4:35:33 PM
model
"tencent/hy4-preview-20260827"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3352
moderation_latency
(null)
generation_time
176839
tokens_prompt
46
tokens_completion
12699
native_tokens_prompt
56
native_tokens_completion
13952
native_tokens_completion_images
(null)
native_tokens_reasoning
13651
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
0.034940656
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer
(null)
request_id
"req-1788453333-Eo4NzUCBqp1qFahIl6xq"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1788453333-tL5Iq6UZKe1BKVtu6tTk"
upstream_id
"594d7db3-4bac-49fe-bec2-628fccb312dd"
provider_responses
0
endpoint_id
"ad2a4093-3d2a-41d9-adf1-8b499ac8445d"
id
"594d7db3-4bac-49fe-bec2-628fccb312dd"
is_byok
false
latency
3352
model_permaslug
"tencent/hy4-preview-20260827"
provider_name
"Tencent"
status
200
total_cost
0.034940656
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
23
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
10
10
10
11
10
12
10
13
10
14
10
15
10
16
10
17
10
18
10
19
10
20
10
21
10
22
10