From the source

Introducing Hy4 preview

770B-parameter model with 1M-token context window now available in preview.

New model

Tencent releases Hy4 preview, a 770B-parameter model with 49B active parameters and a 1M-token context window, open-sourced and available on Tencent Cloud and OpenRouter.

From the source
Today we're releasing Hy4 preview, our most capable model to date. It's a 770B-parameter model with 49B active parameters and a 1M-token context window... Hy4 preview is open-sourced and available today on Tencent Cloud and OpenRouter.
hunyuan.tencent.com

TestingCatalog: “Tencent released open-source Hy4 preview model”

Reporting · 2 outlets

Tencent· 27 Aug

Introducing Hy4 preview

TestingCatalogTencent released open-source Hy4 preview model
PandailyTencent Hunyuan Releases Hy4 Preview, Ranking Among the Top Tier of Open-Source Models

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