# Hy4 Preview

Model tracker · checked 2026-10-19 · https://dbggr.dev/models/hy4-preview/

Hy4 Preview is an everyday open-weight model from Tencent, released 28 August 2026. It's in preview. At DeepInfra it costs $0.834 per million input tokens and $2.50 per million output tokens, with a 1M-token context window. 2 providers serve it, and DeepInfra is the cheapest.

- Made by: Tencent
- Released: 2026-08-28
- Status: Preview
- Tier: Everyday
- Weights: Open
- Context window: 1,048,576 tokens
- Max output: 131,072 tokens
- Input: text
- API id: tencent/Hy4-preview
- Docs: https://huggingface.co/tencent/Hy4-preview

## Hy4 Preview price at 2 providers

US dollars per million tokens. Blended is 3 input tokens for every output token, one number to compare on. The cheapest blended price is highlighted.

| Provider | Input | Output | Cached input | Blended | Batch | Checked |
|---|---|---|---|---|---|---|
| DeepInfra | $0.834 | $2.50 | $0.042 | $1.25 | – | [2026-10-19](https://deepinfra.com/tencent/Hy4-preview) |
| Novita AI | $0.834 | $2.50 | $0.042 | $1.25 | – | [2026-10-19](https://novita.ai/pricing) |

- DeepInfra: Preview release of Tencent's 770B-parameter (49B active) MoE, Apache 2.0 weights.
- Novita AI: Preview release of Tencent's 770B-parameter (49B active) MoE, Apache 2.0 weights.

## Hy4 Preview benchmarks

| Benchmark | Score | What it measures | Reported by |
|---|---|---|---|
| GPQA Diamond | 92.3% | graduate-level science questions answered correctly | [Tencent](https://huggingface.co/tencent/Hy4-preview) |

Scores reported by a model's maker aren't independently checked.

## Models like Hy4 Preview

| Model | Input | Output | Context | Weights |
|---|---|---|---|---|
| Hy4 Preview | $0.834 | $2.50 | 1M | Open |
| [Step 5 Preview](https://dbggr.dev/models/step-5-preview/) | $1.00 | $2.70 | 1M | Closed |
| [NVIDIA Nemotron 3 Ultra](https://dbggr.dev/models/nvidia-nemotron-3-ultra/) | $0.50 | $2.20 | 262K | Open |
| [Inkling](https://dbggr.dev/models/inkling/) | $1.00 | $4.05 | 524K | Open |
| [DeepSeek V4 Pro](https://dbggr.dev/models/deepseek-v4-pro/) | $1.32 | $3.96 | 1M | Open |
| [Muse Spark Open](https://dbggr.dev/models/muse-spark-open/) | $1.25 | $4.25 | 1M | Open |

## FAQ

### How much does Hy4 Preview cost?

Hy4 Preview costs $0.834 per million input tokens and $2.50 per million output tokens at DeepInfra, and $0.042 per million cached input tokens. Prices are list prices in US dollars, last checked 19 October 2026.

### What is Hy4 Preview's context window?

Hy4 Preview takes up to 1,048,576 tokens in one request and writes up to 131,072 tokens in one response.

### Is Hy4 Preview open weight?

It's listed as open weight, but it's still in preview: check Tencent's announcement for when the weights and licence are published.

### Where can I use Hy4 Preview?

Hy4 Preview is available from DeepInfra and Novita AI. At DeepInfra, call it as `tencent/Hy4-preview`.