SaaS Metrics
Product Positioning & Context
Hy4 Preview is a 770B MoE model (49B active, 1M context) from Tencent, built for long-horizon agentic tasks. It autonomously handles coding, game dev, and complex document analysis, running its own tests and fixing bugs before delivery.
Related Ecosystem & Alternatives
Discover adjacent products, open-source repositories, and developer tools sharing similar technical architecture.
Deep-Dive FAQs
What is Hy4 preview?
Hy4 preview is a digital product or tool described as: Tencent’s 770B open model for long-horizon work
Where did Hy4 preview originate?
Data for Hy4 preview was aggregated directly from the Product Hunt community ecosystem, representing raw developer and early-adopter sentiment.
When was Hy4 preview publicly launched?
The initial public indexing or launch date for Hy4 preview within our tracked developer communities was recorded on August 29, 2026.
How popular is Hy4 preview?
Hy4 preview has achieved measurable traction, logging over 180 traction score and facilitating 3 recorded discussions or engagements.
Which technical categories define Hy4 preview?
Based on metadata extraction, Hy4 preview is categorized under topics such as: Open Source, Artificial Intelligence.
Is Hy4 preview recognized by media or academic researchers?
Yes. It has been covered by media outlets like Tencent.com. This indicates the concept has reached a level of mainstream or scientific viability beyond just developer forums.
How does the creator describe Hy4 preview?
The original author or development team describes the product as follows: "Hy4 Preview is a 770B MoE model (49B active, 1M context) from Tencent, built for long-horizon agentic tasks. It autonomously handles coding, game dev, and complex document analysis, running its own..."
Community Voice & Feedback
the overthinking bit is what i'd watch @zaczuo , more than the eval numbers. on long jobs the thing that kills you isn't being wrong, it's burning the window re-checking stuff it already settled, and 1M of room makes that easier to do and harder to spot. 49B active is what decides if anyone runs it outside a datacenter, but 770B total is still 770B you havee to park somewhere.
Congrats on the launch!
Hi everyone!Hy4 preview is the next step after Hy3, and Tencent went much bigger this time. 770B total, 49B active, 1M context.Tencent built a lot of the training around real work from its own engineering and specialist teams. The model is meant to stay with a task when it gets long or messy.They also ran a blind eval with 163 internal experts across 203 engineering tasks. Hy4 preview came out slightly ahead of GLM 5.3 and Kimi K3 🤔It is open under Apache 2.0, and you can try it now through OpenRouter or @WorkBuddy.They are still calling it a preview. It overthinks and over-checks itself. Same habit as Hy3: put it out, see what breaks!
Discovery Source
Product Hunt Aggregated via automated community intelligence tracking.
Tech Stack Dependencies
No direct open-source NPM package mentions detected in the product documentation.
Media Tractions & Mentions
Deep Research & Science
No direct peer-reviewed scientific literature matched with this product's architecture.