Audience
Developers, researchers, and technical professionals seeking an AI model for coding, document work, game development, scientific reasoning, and complex productivity tasks
About Hy4
Hy4 preview is a new-generation open source Mixture-of-Experts flagship model built for real-world productivity tasks across software engineering, office work, game development, and scientific research. The model contains 770B total parameters with 49B activated per token and supports a 1M-token context window, giving it the capacity to work through large codebases, extensive document collections, and long multi-step tasks. Its 78-layer architecture combines Gated DeepSeek Sparse Attention with IndexCache for cross-layer sparse index reuse and identity Hyper-Connections to expand information flow between layers. A native Multi-Token Prediction layer is included for speculative decoding. Hy4 preview is designed to understand, plan, debug, and verify long-horizon engineering tasks, with additional gains in front-end visual quality and interaction design.
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Company Information
Tencent
Founded: 1998
China
hy.tencent.ai/research/hy4-preview
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Product Details
Platforms Supported
Cloud
Training
Documentation
Support
Online
Hy4 Frequently Asked Questions
Q: What kinds of users and organization types does Hy4 work with?
Hy4 works with these users and organization types: Mid Size Business, Small Business, Enterprise, Freelance, Nonprofit, Government, and Startup.
Q: What languages does Hy4 support in their product?
Hy4 supports these languages: English.
Q: What kind of support options does Hy4 offer?
Hy4 offers support via online.
Q: What other applications or services does Hy4 integrate with?
Hy4 integrates with: Tencent Hy.
Q: Does Hy4 have an API?
Yes, Hy4 has an API.
Q: What type of training does Hy4 provide?
Hy4 provides training in the form of documentation.
