hy4 · Hunyuan
Tencent Hy4 preview is a Mixture-of-Experts language model designed for coding, office analysis, and scientific research. With a 1M-token context window, it supports complex software development, long-document analysis, and multi-step workflows. Compared with Hy3 preview, it expands model scale and context capacity while strengthening performance on practical productivity tasks.
Tencent Hy4 preview is a Mixture-of-Experts language model designed for coding, office analysis, and scientific research. With a 1M-token context window, it supports complex software development, long-document analysis, and multi-step workflows. Compared with Hy3 preview, it expands model scale and context capacity while strengthening performance on practical productivity tasks.
On AIHubMix, Hy4 costs $0.8823 per million input tokens and $2.647 per million output tokens. Cached input reads are billed at $0.4412 per million tokens.
Hy4 accepts text and image input.
Hy4 is available through the AIHubMix unified API. The API is OpenAI-compatible: point your OpenAI SDK at https://aihubmix.com/v1, use your AIHubMix API key, and set the model name to hy4 — no other code changes needed.
Hy4 is developed by Hunyuan. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
Hy4 was released on November 4, 2026 by Hunyuan.
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Use Hy4 via the AIHubMix unified API — one interface for every major LLM.