
Hy4 preview is Tencent’s 770B open model for long-horizon work Hy4 preview is developed by Tencent.
What it does well
- Hy4 preview is developed by Tencent.
- Hy4 preview is a 770B parameter language model.
- Hy4 preview is positioned as an open model.
- Hy4 preview is targeted at long-horizon tasks.
Where it falls short
- As a preview release, the model may have stability or feature limitations.
Tagged
- Web-based
- Open Source
Compared with similar things
Picked by shared tags inside the AI Web Apps.
- 01→Omi
Ask your computer anything you saw or heard
- 02→Firecrawl Developer Index
A curated index of 70M+ artifacts for coding agents.
- 03→PageIndex
Accurate, trustworthy answers across professional documents
- 04→Microduck
A tiny open-source biped you can train yourself
- 05→fx (by Vercel)
Vercel's tiny, open-source coding agent
- 06→HarnessRouter Community Edition
Open-source unified interface for agent harnesses
Related reading
- Attention Is the New Oil
If you built something with AI, posting is getting hard to ignore. GaryVee's 'interest media' shift is real — more feeds now recommend content by interest, not only by who follows you — so a maker with zero followers can sometimes out-reach an established brand. That's the unlock and the mandate: building got faster, getting seen is the job, and many products struggle to grow without it. Here's the honest first move, written for a builder who would rather ship a feature than post.
Read guide → - The Future of Marketing for People Who Build with AI
When AI makes building a product trivial and floods the web with generic content, marketing inverts: distribution becomes the moat, and distribution increasingly means being the source AI answer engines and buying agents cite and recommend. The durable move before 2027 is to engineer your product to be machine-discoverable and corroborated from day one — even at zero domain authority. Strong in the future means cited, not ranked.
Read guide → - How to Get Your First Users for a Vibe-Coded App
The cheapest way to get your first users for a vibe-coded app is organic short-video: post native-looking TikToks and Reels from accounts that read like your target user, and convert people in the comments — no ads, no influencers. It's slow at first and most clips flop, but it's how indie consumer apps go from zero to their first thousands of downloads.
Read guide →
Featured on Vibedonalds
Own Hy4 preview? Add this badge to your site to show you’re listed — and link back to your profile here.
<a href="https://vibedonalds.com/tools/hy4-preview" target="_blank" rel="noopener">
<img src="https://vibedonalds.com/badge/featured-on-vibedonalds.svg" alt="Hy4 preview — Featured on Vibedonalds" width="240" height="60" loading="lazy" />
</a>Frequently asked questions
- What is Hy4 preview?
- Hy4 preview is Tencent’s 770B open model for long-horizon work
- What category does Hy4 preview belong to?
- Hy4 preview is in the AI Web Apps category — Web apps with AI baked in — built for everything from journaling to research. Submitter-shipped products live here.
- What are the downsides of Hy4 preview?
- As a preview release, the model may have stability or feature limitations.