Saturday, August 29, 2026HotTea verified storyVerified 4:03 PM PDT
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Tencent released open weights for its Hy4 preview model

Tencent released Hy4 preview on August 28. Its model card lists 770 billion total parameters, with 49 billion active for each token. The card also lists a context window above one million tokens. Tencent published the weights under the Apache 2.0 license. The company described the model as a tool for coding, office work, research, and financial analysis.

Verified 4:03 PM PDT · 2 original sources

The evidence

What the reporting establishes

What happened

Tencent released Hy4 preview on August 28. Its model card lists 770 billion total parameters, with 49 billion active for each token. The card also lists a context window above one million tokens. Tencent published the weights under the Apache 2.0 license. The company described the model as a tool for coding, office work, research, and financial analysis.

Pressure point

Tencent supplied the architecture and performance claims. Independent evaluations are not available yet. A preview release can change before a stable version. A context window above one million tokens also does not prove the model can handle a long task reliably.

What to watch

Watch independent tests on coding, research, long-context accuracy, and serving cost. Hardware requirements, quantized versions, and adoption outside Tencent products will show whether open access turns into practical use.

Audit the story

Original sources

Company claims remain company claims. Follow the reporting and judge the evidence directly.

  1. Tencent on Hugging FaceHy4 preview model card and weights
  2. Reuters via WHBLChina's Tencent releases new open-source AI model for coding, research tasks

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