Tencent Hy4 Preview
Tencent
Tencent Hy4 preview is Tencent Hy’s open-source large language model, featuring 770B total parameters, 49B active parameters, and a context window exceeding 1 million tokens. Built for real-world productivity, it supports long-horizon coding, cross-document analysis, office content creation, game development, and scientific reasoning, making it well-suited to complex agents and multi-step professional workflows.
- Language
- Reasoning
- Tool use
- Implicit caching
- open weights
- Context
- 1.0M
- Max output
- 64K
- Input / 1M
- $0.834
- Output / 1M
- $2.50
Quickstart
Point any OpenAI-compatible client at Maxynetic Systems and pass tencent/hy4-preview as the model.
curl https://api.maxynetic.com/v1/chat/completions \
-H "Authorization: Bearer $MAXYNETIC_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "tencent/hy4-preview",
"messages": [{ "role": "user", "content": "Explain routing in one line." }]
}'Pricing
Billed per token with no markup on the underlying provider rate.
Input
Per 1M prompt tokens
$0.834
Output
Per 1M completion tokens
$2.50
Cache read
Per 1M cached prompt tokens
$0.042
A 1M-token prompt with 250K tokens of output costs about $1.46.