Hunyuan 4 Preview
NewStandardTencent's Hunyuan 4 preview, built for coding agents and complex tool-use workflows.
770B-parameter MoE with 49B active parameters and a 1M-token context. Designed for productivity tasks that require planning, context continuity, and sustained multi-step execution.
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Hunyuan 4 Preview is somewhat expensive at $0.83/M tokens input and $2.50/M tokens output. Cached input reads are priced at $0.04/M tokens, making repeated context cheaper. The model supports extended reasoning, a 1M context window.
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Nemotron 3 Ultravs Hunyuan 4 PreviewFrequently Asked Questions about Hunyuan 4 Preview▼
When was Hunyuan 4 Preview released?
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Hunyuan 4 Preview was released on August 28, 2026.
Who created Hunyuan 4 Preview?
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Hunyuan 4 Preview was created by Tencent.
How much does Hunyuan 4 Preview cost?
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Hunyuan 4 Preview costs $0.83/M input tokens and $2.50/M output tokens.
What is Hunyuan 4 Preview API pricing?
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The Hunyuan 4 Preview API is priced at $0.83 per million input tokens and $2.50 per million output tokens. You can access Hunyuan 4 Preview through idapt.app alongside 200+ other AI models in one workspace.
Is Hunyuan 4 Preview a reasoning model?
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Yes, Hunyuan 4 Preview is a reasoning model. It can think step-by-step through complex problems before providing an answer, often yielding better results on difficult tasks like math, coding, and multi-step logic.
Does Hunyuan 4 Preview support image or vision input?
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No, Hunyuan 4 Preview does not currently support image or vision input. It is a text-only model.
Does Hunyuan 4 Preview support audio?
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No, Hunyuan 4 Preview does not support audio input.
What is the context window of Hunyuan 4 Preview?
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Hunyuan 4 Preview has a context window of 1M tokens, meaning it can process approximately 786,432 words of context at once.
Is Hunyuan 4 Preview open source?
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Hunyuan 4 Preview is a proprietary model developed by Tencent. The model weights and training data are not publicly available.
Where can I use Hunyuan 4 Preview?
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You can chat with Hunyuan 4 Preview on idapt.app — no separate API key required. idapt is an AI workspace with 200+ models, agents, computers, and tasks. You can also access Hunyuan 4 Preview through Tencent's own API or platform.