Hy4 Preview now available on AI Gateway
Tencent's Hy4 (770B MoE) joins Vercel's AI Gateway—practitioners can now route coding agents through a unified API with cost tracking and failover.
Why it matters
A capable open-weight model gains distribution through a developer-friendly platform. Practitioners building multi-agent stacks get another routing option; the 1M context window and MoE efficiency matter for long-horizon tasks.
The key facts
12 to knowHy4 Preview: 770B total parameters, 49B active per token (MoE)
1M token context window
Available via Vercel AI Gateway with model routing, cost tracking, zero data retention option
Supports coding agents: Claude Code, Cursor, OpenCode, Pi, Codex
Provider pricing with no platform fee or markup
Use case focus: long-horizon coding, document analysis, game dev, scientific reasoning
Hy4 Preview: 770B total parameters, 49B active per token (MoE architecture)
Open-source model from Tencent
Available via Vercel AI Gateway with unified API, usage tracking, routing, failover
No platform fee on inference, reflects provider pricing
Integrates with coding agents: Claude Code, Codex, OpenCode, Cursor, Pi
SDK integration: set model to 'tencent/hy4-preview'
Go to the source
Vercel Blogvercel.com
Publisher excerpt: is now available on AI Gateway.Hy4 Preview from Tencent 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.…