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| Attribute | Universal-3.5 Prouniversal-3-5-pro | Hy4 previewhy4-preview |
|---|---|---|
| Pricing | ||
| Input | — Not priced per input token | $0.834 / 1M |
| Output | — Not priced per output token | $2.50 / 1M |
| Cache Write (5m) | Not applicable | $0.834 / 1M |
| Cache Write (1h) | Not applicable | $0.834 / 1M |
| Cache Read | Not applicable | $0.834 / 1M |
| Web Search | $0 / 1M | $0 / 1M |
| Context | ||
| Max context | N/A | 1M |
| Max output | N/A | N/A |
| Capabilities | ||
| Vision | No | Yes |
| Function Calling | No | Yes |
| JSON Mode | No | Yes |
| Streaming | No | Yes |
| Catalogue | ||
| Provider | AssemblyAI | Tencent |
| Category | voice | chat |
| Charge type | Pay As You Go | Pay As You Go |
| Released | 2026-09-22 | — |
| Description | ||
| Summary | AssemblyAI Universal-3.5 Pro speech-to-text. Billed per second of audio. | Tencent Hy4 Preview is a Mixture-of-Experts (MoE) model from Tencent, featuring 770B total parameters with 49B activated per token. It is designed for coding agents, complex tool-driven workflows, and professional productivity tasks that require strong planning and reliable execution. Optimized for context continuity and sustained multi-step work, Hy4 Preview is well suited for long-horizon coding, agentic automation, tool orchestration, and complex real-world workflows. |