Tencent's preview release of Hy4, its next-generation Hunyuan reasoning model, with a 1M context window and preserved thinking.
LLM Gateway routes requests to the best providers that are able to handle your prompt size and parameters.
Tencent's preview release of Hy4, its next-generation Hunyuan reasoning model, with a 1M context window and preserved thinking. You can access it through LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.
Pricing for Hy4 Preview on LLM Gateway starts at $0.83 per million input tokens and $2.50 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.
Hy4 Preview supports a context window of up to 1,000,000 tokens on its largest provider deployment.
Hy4 Preview is served by Tencent Cloud through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.
Yes. Hy4 Preview supports both tool (function) calling and strict JSON output schema (upstream-enforced) through LLM Gateway.
Hy4 Preview was released on August 28, 2026.