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Tencent releases Hy4 Preview, a 770B-parameter open model with 1M context window, and says it outperforms Z.AI and Moonshot models in internal tests

Tencent Holdings Ltd. released a foundation model it says outperforms rivals Z.AI Co. and Moonshot AI in internal tests …

Bloomberg

Discussion

  • @vaibhavsisinty Vaibhav Sisinty on x
    Tencent just open-sourced a model that outscores GPT-5.6 Sol on coding. It also beats Claude Fable 5 and Grok-4.6. Hy4 preview. 770B parameters. 49B active. 1M context. Weights live on Hugging Face right now. On the Arena AI Code leaderboard it's ranked #5 globally. Only Claude
  • @tencentglobal @tencentglobal on x
    Tencent has released and open-sourced Hy4 preview, a next-generation large language model with 770B total parameters and a 1M+ token context window. Ranked among the top tier of open-source models. Try Hy4 preview. OpenRouter: https://openrouter.ai/... Tencent Cloud TokenHub:
  • @chenchenzhang_1 Chenchen Zhang on x
    Proud to have contributed to Hy4's reasoning and agentic capabilities. https://x.com/...
  • @arena @arena on x
    Big news: Hy4 preview by @TencentHunyuan just landed ~#5 in the Code Arena: WebDev with 1633 pts (AutoEval). This is a significant improvement from Hy3 at #31 overall (+115 pts)! Among open models, Hy4 preview is ~#3, compared to Hy3 at #7. Note: this is an early AutoEval
  • @mrahmadawais Ahmad Awais on x
    @TencentHunyuan Shipping it live in @CommandCodeAI 🐐 Excited to be an early partner to benchmark Hy4 preview, in our internal bench it performed better than GLM 5.3 Flash on token costs and time. Will continue to test and share more results.
  • @xeophon Florian Brand on x
    Hy4 Preview is out! 770B-A49B, 1M context, Apache 2.0 Reported scores are great, putting it roughly on par with GLM-5.3 (!). Tencent has REALLY picked up model training since @ShunyuYao12 joined, congrats!
  • @tencentai_news @tencentai_news on x
    Introducing Hy4 preview ◆ Open weights: 770B MoE, 49B active, 1M context ◆ Built for real work: code, docs and analysis, scientific research ◆ Hy4 preview helped optimize its own training pipeline, kernels included ◆ We ship upgrades, not price hikes Free in @WorkBuddy_AI
  • @tencenthunyuan Tencent Hy on x
    🚀 Hy4 preview is here. 770B, 49B active, 1M context. Built for productivity. Open source frontier. Consistent affordable price. Use it. Tell us what breaks. More on Hy blog: https://hy.tencent.ai/... HuggingFace: https://huggingface.co/... Github:https://github.com/ ...
  • Yingying Zhai Yingying Zhai on linkedin
    This is only the beginning.  With Hy4 Preview, we look forward to shaping what comes next together with our community …