hy3-preview · Hunyuan
Hunyuan Hy3 preview is designed for agent workloads, adopting a MoE architecture with 295B capacity and 21B activated parameters. It provides three modes within the same model—no_think (ultra-fast response), think_low (fast thinking), and think_high (deep reasoning)—to accommodate different latency and depth requirements from high-frequency interactions to complex engineering tasks. On code benchmarks such as SWE-bench Verified it approaches the current state of the art, and its 256K context supports cross-file code refactoring and long-document analysis. It is suitable for developers who require reliable task completion while being sensitive to inference costs.
Hunyuan Hy3 preview is designed for agent workloads, adopting a MoE architecture with 295B capacity and 21B activated parameters. It provides three modes within the same model—no_think (ultra-fast response), think_low (fast thinking), and think_high (deep reasoning)—to accommodate different latency and depth requirements from high-frequency interactions to complex engineering tasks. On code benchmarks such as SWE-bench Verified it approaches the current state of the art, and its 256K context supports cross-file code refactoring and long-document analysis. It is suitable for developers who require reliable task completion while being sensitive to inference costs.
Hy3 Preview has a 256,000 token context window. It supports up to 128,000 output tokens.
On AIHubMix, Hy3 Preview costs $0.17 per million input tokens and $0.567 per million output tokens. Cached input reads are billed at $0.051 per million tokens.
Hy3 Preview accepts text input.
Hy3 Preview supports tool calling, function calling, structured outputs, web search, long context and thinking. Per-protocol parameter support is listed in the capability table on this page.
Hy3 Preview 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 hy3-preview — no other code changes needed.
Hy3 Preview is developed by Hunyuan. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
Hy3 Preview was released on April 23, 2026 by Hunyuan.
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Use Hy3 Preview via the AIHubMix unified API — one interface for every major LLM.