Tencent releases Hy4, now on OpenRouter and Tencent Cloud

Tencent's Hy4 is live on OpenRouter, where it is listed as tencent/hy4 with a 1,048,576-token context window. The AI-model news account AiBattle reports that it is also on Tencent Cloud, and that Tencent plans to release the model's weights and is working on a smaller Hy4 Flash. Tencent Hunyuan's own announcement says Hy4 is new with vision, calls it "firmly among the leading open models" and says it was built with cyber and biosecurity in mind. Tencent's research page for the model is at hy.tencent.ai/research/hy4.

Posts about the launch say Hy4 is also available in Tencent's WorkBuddy and CodeBuddy tools, and that WorkBuddy use is free from November 4 to 15. They also give OpenRouter prices of $0.417 per million input tokens, $1.25 per million output tokens and $0.02 for cached input; these figures come from those posts, not from the catalog entry. AiBattle adds that Tencent says it removed offensive cyber-security training data from Hy4 while keeping defensive data.