Hy4

Tencent · Released November 2026

It belongs to Tencent's Hunyuan family, where the Hy line covers general chat and the Hy-MT models specialise in translation.

Facts and pricing

Provider

Tencent

Context window

1.0M tokens

Input price

5.0 credits / 1M tokens ($0.42 raw)

Output price

15.0 credits / 1M tokens ($1.25 raw)

Vision (image input)

Yes

Tool calling

Yes

Extended reasoning

No

Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin. Raw prices shown per 1M tokens.

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What Hy4 is best for

• Balanced everyday work: writing, questions, brainstorming and summarization
• Very long documents and codebases: a 1.0M-token window fits entire books or repositories in one conversation
• Working with images: screenshots, charts, photos and scanned documents alongside text
• Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows

Example prompts

Prompts that suit a general purpose model like Hy4:

• Help me outline a talk about what I learned this year
• Compare these two paragraphs and tell me which is clearer and why
• Draft a polite reply declining this invitation
• Explain this concept with a concrete everyday analogy

Tencent family

Model comparisons

• Claude Opus 5.5 vs Claude Opus 5
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• Claude Opus 5.5 vs GPT-6 Sol
• Claude Opus 5.5 vs Claude Sonnet 5

Frequently asked questions

What is Hy4?

Hy4 is an AI model by Tencent.

How much does Hy4 cost on Zeplik?

Input tokens cost 5.0 credits per million and output tokens 15.0 credits per million (1 credit = $0.10; the raw provider rates are $0.42 and $1.25 per million). New accounts start with free credits.

How long can a conversation with Hy4 be?

Hy4 has a 1.0M-token context window (1,048,576 tokens), which covers the conversation plus any documents you attach.

Does Hy4 support images and tools?

Hy4 accepts image input and supports tool calling.

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