Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...
Model details →Anthropic: Claude Sonnet 4.5 vs Tencent: Hy4 preview
Tencent: Hy4 preview wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
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...
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Sonnet 4.5 | Tencent: Hy4 preview | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1M | 1.0M | 🏆 Tencent: Hy4 preview |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $3.00 | $0.83 | 🏆 Tencent: Hy4 preview |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $15.00 | $2.50 | 🏆 Tencent: Hy4 preview |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | — | 🏆 Anthropic: Claude Sonnet 4.5 |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Anthropic: Claude Sonnet 4.5 better than Tencent: Hy4 preview?
Tencent: Hy4 preview wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Anthropic: Claude Sonnet 4.5 and Tencent: Hy4 preview?
Input: $3.00 vs $0.83 per 1M tokens. Output: $15.00 vs $2.50 per 1M tokens.
What context windows do Anthropic: Claude Sonnet 4.5 and Tencent: Hy4 preview support?
Anthropic: Claude Sonnet 4.5 supports up to 1M tokens. Tencent: Hy4 preview supports up to 1.0M tokens.
Do both Anthropic: Claude Sonnet 4.5 and Tencent: Hy4 preview support tool calling?
Anthropic: Claude Sonnet 4.5: yes. Tencent: Hy4 preview: yes.