# 腾讯发布 Hy4 Preview：770B 开源模型

- 来源：Chubby♨️ (@kimmonismus)
- 发布时间：2026-08-28 15:19
- AIHOT 分数：51
- AIHOT 链接：https://aihot.virxact.com/items/cmtcngo2v02f7ro64xglhmd1g
- 原文链接：https://x.com/kimmonismus/status/2093237109708468361

## AI 摘要

腾讯发布 Hy4 Preview，770B 参数开源模型，49B 激活参数，1M token 上下文窗口。其智能体研究能力可并行协调多个 Codex 会话并评估结果、调整方向，在八项基准上超越 Codex 单独运行。Hy4 面向长时编码、多文件办公与科学研究，定价稳定实惠。

## 正文

Tencent just released Hy4 Preview: a 770B-parameter open-source model with 49B active parameters and a 1M-token context window.

The most interesting part is its agentic research capability. Tencent says Hy4 coordinated several Codex sessions in parallel, evaluated their results and adjusted the research direction, outperforming Codex working alone across eight benchmarks.

Hy4 is aimed at long-horizon coding, multi-file office work and scientific research.

In sum: a solid, good release. A few months ago this would be absolute sota.

### 引用推文

> Tencent Hy：🚀 Hy4 preview is here. 770B, 49B active, 1M context. Built for productivity. Open source frontier. Consistent affordable price. Use it. Tell us what breaks. Mo...