Hy4 Preview now available on AI Gateway
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Hy4 Preview from Tencent is now available on AI Gateway.
Hy4 Preview is an open-source Mixture-of-Experts model with 770B total parameters and 49B active per token, aimed at long-horizon coding, document analysis, game development, and scientific reasoning. It serves a context window of 1M tokens.
To use Hy4 Preview, set model to tencent/hy4-preview in the AI SDK:
import { streamText } from 'ai';
const result = streamText({ model: 'tencent/hy4-preview', prompt: 'Add pagination to the results endpoint.',To use it in a coding agent, see the coding agents guide, then run vercel ai-gateway coding-agents setup to connect agents like Claude Code, Codex, OpenCode, Cursor, Pi, and more and select tencent/hy4-preview inside the agent.
Try Hy4 Preview in the model playground.
AI Gateway provides a unified API for calling models, tracking usage and cost, and configuring retries, failover, and performance optimizations for higher-than-provider uptime. It includes built-in custom reporting, Zero Data Retention support, budgets for API keys, routing rules, and more.
AI Gateway reflects provider pricing with no markup and does not charge a platform fee on inference, including on Bring Your Own Key (BYOK) requests.
You can view all language models available on AI Gateway.
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