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Run: 2026-09-03-01M1KXSDXDS9HWCY76PNJ70GEB
Run Details
Model:
Hy4 Preview (Reasoning, High)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
2m 13s
Cost:
$0.024419
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
Detective Eleanor Vance slowly stepped out of the car and into the cold, relentless rain that battered the empty street. The old Marchetti mansion loomed ahead through the storm, its windows dark, its iron gate groaning as if in warning. She had been summoned here by a trembling telephone call from a woman who had refused to give her name. Now the front door stood open, spilling yellow light onto the wet steps, and no one answered Vance's loud call. She crossed the threshold, her shoes clicking on the marble floor, and the heavy air smelled of dust and secrets. The mistress lay at the foot of the grand staircase, her eyes wide, a crimson stain blooming across her chest. Vance knelt beside the body, noting the overturned porcelain vase, the scattered letters, and the faint scent of bitter almonds. Somewhere above her, a clock ticked with stubborn precision, marking the exact hour when the household's ordinary life had ended. Rain hissed against the tall windows, sealing her inside a house that suddenly felt far too quiet for complete comfort. Vance slowly rose, her face unreadable, and she whispered the words that would begin the long hunt for a killer.
created_at
"2026-09-03T15:21:53.338Z"
9/3/2026, 3:21:53 PM
model
"tencent/hy4-preview-20260827"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1307
moderation_latency
(null)
generation_time
132837
tokens_prompt
46
tokens_completion
8824
native_tokens_prompt
56
native_tokens_completion
9745
native_tokens_completion_images
(null)
native_tokens_reasoning
9489
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
0.024418949
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer
(null)
request_id
"req-1788448913-IHKtncj35Vo0UdkmdYMh"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1788448913-8G3618zY1o4duoTVb9TJ"
upstream_id
"412307f0-556f-42ff-9843-cf3803652668"
provider_responses
0
endpoint_id
"ad2a4093-3d2a-41d9-adf1-8b499ac8445d"
id
"412307f0-556f-42ff-9843-cf3803652668"
is_byok
false
latency
1307
model_permaslug
"tencent/hy4-preview-20260827"
provider_name
"Tencent"
status
200
total_cost
0.024418949
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
10
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20
6
20
7
20
8
20
9
20