Tencent HY4 IS SOLID! Best Open-Weight Model? (FULLY FREE)

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Tencent just dropped HY4 Preview, a massive new open-weight AI model out of China — and it might be one of the most underrated releases right now.

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HY4 is a 770B-parameter MoE model with 49B active parameters and a massive 1M-token context window. In this video, I put HY4 through real-world tests across coding, 3D game development, long-horizon agentic tasks, and more to see how it stacks up against models like Qwen 3.8, GLM 5.3, DeepSeek V4 Flash Vision, Kimi K3, Claude Opus 5, and GPT-5.6.

We also look at some insane HY4 demos — including a 3D Spider-Man-style game, zombie FPS environments, a full Unity penguin game, an ISS simulation, and other complex coding projects. Even crazier, HY4 has already been compressed from roughly 1.5TB to around 200GB with surprisingly little benchmark degradation.

Is Tencent HY4 actually the best open-weight model right now? Let's find out.

🔥 In this video:
• Tencent HY4 Preview explained
• 770B parameters / 49B active
• 1-million-token context window
• HY4 coding & agent benchmarks
• HY4 vs Qwen 3.8
• HY4 vs GLM 5.3
• HY4 vs DeepSeek V4 Flash Vision
• HY4 vs Kimi K3
• 3D game generation tests
• Long-horizon coding performance
• HY4 GGUF quantization
• Pricing & performance
• Is HY4 the best open-weight AI model?

[Time Stamps]:
0:00 - Intro
0:40 - WOAI Bench
1:08 - Benchmarks
1:43 - WebDev Arena
3:16 - Local Setup
3:39 - Pricing
3:58 - Document Analysis
4:15 - How To Use
4:32 - Spiderman Clone
5:10 - HY4 vs GLM 5.3 Flash
6:02 - Pokemon Game
7:14 - MineCraft Clone
7:54 - Zombies Demo
8:33 - Frontend Demo
9:00 - 3D Orbital
9:56 - Best Open-Model
11:24 - Two Cents

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