Tencent Hy4 Preview

Tencent Hy4 preview is Tencent Hy’s open-source large language model, featuring 770B total parameters, 49B active parameters, and a context window exceeding 1 million tokens. Built for real-world productivity, it supports long-horizon coding, cross-document analysis, office content creation, game development, and scientific reasoning, making it well-suited to complex agents and multi-step professional workflows.

Model overview

Model ID: tencent/hy4-preview
Provider: tencent
Type: language
Context window: 1,024,000 tokens
Max output tokens: 64,000

Tags: reasoning, tool-use, implicit-caching

Model pricing

Metric	Value
`Input tokens (/1M)`	`$0.83`
`Output tokens (/1M)`	`$2.50`
`Image generation`	`n/a`
`Cached input read (/1M)`	`$0.04`
`Cached input write (/1M)`	`n/a`
`Pricing source`	`gateway`

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