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Tencent released the full version of Hy4 this morning, its first model in the series with vision and . It is a design with 770 billion total , about 49 billion active, and a context window above 1 million tokens. Bloomberg reports Tencent saying it joins the top tier of Chinese open-weight AI for the first time. A cheaper Flash version is promised.
The company's own charts are more modest. Across 12 headline Hy4 ranks first on none, trails Claude Opus 5.5 and GPT-6.1 Sol on most, and ties Kimi K3.1 Pro six to six among open models.
Its best claim is Tencent's own blind finance test with 213 professionals, where it scored 3.04 against 2.97 for DeepSeek V4.1 Flash. Reuters reports it was trained with limited cybersecurity data amid hacking fears, the same choice Moonshot made with K3.1 Pro.
"Open-weight" currently describes a plan. Tencent's page this morning held the August preview under and no final Hy4 repository, and one integrator quotes Tencent as saying it "plans to open-source the model weights." Pricing is RMB 6 per million input and RMB 18 output, half that through December 31st.
Tencent launches Hy4, a 770-billion-parameter model it calls top tier, with final weights still to come
Tencent released the full version of Hy4 this morning, its first model in the series with vision and computer use. It is a mixture-of-experts design with 770 billion total parameters, about 49 billion active, and a above 1 million tokens. Bloomberg reports Tencent saying it joins the top tier of Chinese AI for the first time. A cheaper Flash version is promised.
The company's own charts are more modest. Across 12 headline benchmarks Hy4 ranks first on none, trails Claude Opus 5.5 and GPT-6.1 Sol on most, and ties Kimi K3.1 Pro six to six among open models. Its best claim is Tencent's own blind finance test with 213 professionals, where it scored 3.04 against 2.97 for DeepSeek V4.1 Flash. Reuters reports it was trained with limited cybersecurity data amid hacking fears, the same choice Moonshot made with K3.1 Pro.
"Open-weight" currently describes a plan. Tencent's Hugging Face page this morning held the August preview under Apache 2.0 and no final Hy4 repository, and one integrator quotes Tencent as saying it "plans to open-source the model weights." Pricing is RMB 6 per million input tokens and RMB 18 output, half that through December 31st. SourcesBBAC
Sources
- BTencent declares latest AI model ranks among China's best (Bloomberg, read via Techmeme summary)bloomberg.com
- BTencent rolls out AI model trained with limited cybersecurity data (Reuters, headline only)reuters.com
- Atencent/Hy4-preview (Hugging Face)huggingface.co
- CHy4 specs, benchmarks and pricing (APIYI)help.apiyi.com
This story ran in the Morning Brief of November 4th 2026.