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Run: 2026-09-03-01M1M276GS9ZVRG38TFVKAA7YF
Run Details
Model:
Hy4 Preview (Reasoning, High)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
2m 18s
Cost:
$0.026930
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 rain had not stopped for three long, dreary days when Inspector Harlan finally arrived at the remote ancient estate. He stepped from the black carriage, collar turned against the biting wind, and studied the silent crumbling mansion before him. A single lamp burned in the upper window, its pale glow barely piercing the thick and unnatural gray fog outside. The butler opened the heavy oak door before Harlan could knock, his weary face pale and drawn with evident fear. Harlan stepped inside, the faint scent of damp stone and something disturbingly metallic clinging faintly to the cold still air. The Inspector followed the trembling servant down a long dim hall toward the closed library doors at the very end. He slowly pushed the heavy doors open and froze, for Lord Ellingham lay sprawled upon the Persian rug, quite dead. A heavy silver candlestick rested near his outstretched hand, its base smeared with a thick, dark, and unmistakable red stain. Yet the tall French windows were locked from within, and no muddy footprint marred the dark wet garden stone outside.
created_at
"2026-09-03T16:39:18.817Z"
9/3/2026, 4:39:18 PM
model
"tencent/hy4-preview-20260827"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2441
moderation_latency
(null)
generation_time
137798
tokens_prompt
46
tokens_completion
9343
native_tokens_prompt
56
native_tokens_completion
10749
native_tokens_completion_images
(null)
native_tokens_reasoning
10523
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
0.026929953
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer
(null)
request_id
"req-1788453558-4zEqtoBoqLa5WwMp4Eq0"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1788453558-9QrZYIHxGMvN9yWYvn19"
upstream_id
"cd990ba1-e41c-43de-92ea-88864d216020"
provider_responses
0
endpoint_id
"ad2a4093-3d2a-41d9-adf1-8b499ac8445d"
id
"cd990ba1-e41c-43de-92ea-88864d216020"
is_byok
false
latency
2440
model_permaslug
"tencent/hy4-preview-20260827"
provider_name
"Tencent"
status
200
total_cost
0.026929953
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
9
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20
6
20
7
20
8
20