GPT-5.4 nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks. It supports text and image inputs and is designed for low-latency...
Model details →OpenAI: GPT-5.4 Nano vs Tencent: Hy3 preview
OpenAI: GPT-5.4 Nano and Tencent: Hy3 preview are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
Hy3 preview is a high-efficiency Mixture-of-Experts model from Tencent designed for agentic workflows and production use. It supports configurable reasoning levels across disabled, low, and high modes, allowing it to...
Model details →Side-by-side comparison
| Capability | OpenAI: GPT-5.4 Nano | Tencent: Hy3 preview | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 400K | 262K | 🏆 OpenAI: GPT-5.4 Nano |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.20 | $0.06 | 🏆 Tencent: Hy3 preview |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $1.25 | $0.21 | 🏆 Tencent: Hy3 preview |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | — | 🏆 OpenAI: GPT-5.4 Nano |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is OpenAI: GPT-5.4 Nano better than Tencent: Hy3 preview?
OpenAI: GPT-5.4 Nano and Tencent: Hy3 preview are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
What's the price difference between OpenAI: GPT-5.4 Nano and Tencent: Hy3 preview?
Input: $0.20 vs $0.06 per 1M tokens. Output: $1.25 vs $0.21 per 1M tokens.
What context windows do OpenAI: GPT-5.4 Nano and Tencent: Hy3 preview support?
OpenAI: GPT-5.4 Nano supports up to 400K tokens. Tencent: Hy3 preview supports up to 262K tokens.
Do both OpenAI: GPT-5.4 Nano and Tencent: Hy3 preview support tool calling?
OpenAI: GPT-5.4 Nano: yes. Tencent: Hy3 preview: yes.
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