Tencent Hy4: vision + computer-use flagship; API on Tencent Cloud/OpenRouter; full weights planned (preview 770B/49B already OSS)

Why it matters

【Key points】

• Tencent Hy (2026-11-04) published the Hy4 GA post (hy.tencent.ai/research/hy4). vs Hy4 preview (≈770B total / 49B active, 1M context, Apache-2.0, OSS since Aug): GA scales pre/post-training
• adds vision for the first time
• adds computer use (CLI+GUI, Blender/CAD, multi-app long-horizon)
• claims gains in frontend/game, finance/office, scientific research & AI R&D, and long-horizon assistants.
• Live on Tencent Cloud and OpenRouter (id tencent/hy4, created≈2026-11-04T04:20:31Z) and in CodeBuddy / WorkBuddy / Yuanbao / ima
• same API price vs preview with large quality claims.
• Primary pricing per M tokens: cached in $0.042 / in $0.834 / out $2.501.
• Full Hy4 weights still “planned” with vLLM (Inferact) / SGLang partners and a forthcoming system card.
• Also claims open-sourcing HyCell and HyPDE (with Hyra 2.0).

• Self-reported comps (mostly internal/partner, need third-party checks): finance expert panel 579 tasks open-weight #1 (3.04 vs DeepSeek-V4.1-Flash-1017 2.97, Kimi K3.1 Pro 2.68, GLM-5.3 2.68)
• TenureTrail 123 research tasks open-weight #1
• hallucination 15.76%→5.45% vs preview
• GameDev/GameLogic +19.1%/+9.8%.
• Safety: defensive-only cyber data filters; Xuanwu/Keen red team; Hy-BioExperimentBench 30.4/100.
• Roadmap: Hy4 flash; admits gap vs top proprietary models.

【Our read】

Background

• Chinese open/semi-open flagships keep pressing on coding agents and long-horizon work.
• Preview shipped weights first; GA is an API/product capability jump (vision + computer use) with weights still pending—unlike Mistral Large 4’s same-day OSS dro…

【Verifiable】

• Primary EN/ZHNovember 4, 2026
• OpenRouter: tencent/hy4 (created 2026-11-04T04:20:31Z); preview since 2026-08-28
• HF/GitHub preview weights (not GA)
• github.com/Tencent-Hunyuan/Hy4-preview— no Hy4 GA weight card found

Site: no hy4 event; only related e/947 Hy Memory 2.0. Bloomberg/Techmeme = secondary amplify only.