On August 28, 2026 Tencent released and open-sourced its Hunyuan Hy4 preview: a 770B-parameter Mixture-of-Experts model activating 49B parameters per token, with a 1-million-token context window and true Apache 2.0 weights. Hosted access on Tencent Cloud TokenHub and OpenRouter is priced at $0.834 per million input tokens and $2.501 per million output tokens.
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Tencent open-sources Hy4, a 770B model with 1M context under Apache 2.0
Why this matters for founders
AI builders can self-host Hy4 for commercial use with no license restrictions, or use the cheap hosted API to cut long-context and coding-agent inference costs versus closed frontier models.
Source: Tencent
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