Tencent: Hy4 preview
Analysis Summary
Tencent Hy4 preview offers a long 1.05M token context window alongside tool use and function calling. That feature set could support document-heavy agents, structured research, and workflow automation where text processing and external actions are central requirements.
The model-specific record includes no reasoning, coding, or agentic benchmark results, so capability and consistency cannot be compared reliably with established production choices. Its listed pricing of $0.834 per million input tokens and $2.501 per million output tokens is workable for pilots, but the preview designation adds operational uncertainty. It is best tested in bounded internal workflows with clear fallbacks rather than adopted as the primary client model.
Assessed September 1, 2026
Editorial notes
Hy4 preview provides tool use, function calling, and a 1.05M token context window at moderate pricing, but its preview status and lack of model-specific benchmark data make production reliability unverified.
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DFO Verdict
Hy4 preview provides tool use, function calling, and a 1.05M token context window at moderate pricing, but its preview status and lack of model-specific benchmark data make production reliability unverified.
How Tencent: Hy4 preview compares
Its 1M-token context window is larger than 94% of the models we list. At $0.83 per million input tokens it is cheaper than 29% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on value. The pulled-in technical corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $0.83 | $0.000834 |
| Output | $2.50 | $0.002501 |
What would Tencent: Hy4 preview cost your business?
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A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 748 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save Tencent: Hy4 preview for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout Tencent: Hy4 preview
Tencent: Hy4 preview is a mixture-of-experts model from Tencent, with 49B active parameters out of 770B total. It is designed for coding agents, complex tool-use workflows, and productivity tasks that..
Frequently asked questions about Tencent: Hy4 preview
How much does Tencent: Hy4 preview cost?
Tencent: Hy4 preview costs $0.83 per million input tokens and $2.50 per million output tokens.
What is the context window of Tencent: Hy4 preview?
Tencent: Hy4 preview has a context window of 1,048,576 tokens (1M).
What can Tencent: Hy4 preview do?
Tencent: Hy4 preview supports tool use and function calling.
Who created Tencent: Hy4 preview?
Tencent: Hy4 preview is developed by Tencent and was released on August 28, 2026.