Hy3 preview
Summary
Hy3 preview is an open-weight language model from Tencent (Hunyuan), released on 20 Apr 2026. It accepts text and generates text, with a 262K-token context window and up to 236K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.18 per million input tokens and $0.60 per million output tokens (OpenRouter), across 1 provider we track.
Tencent Hy reasoning model for coding, instruction following, and agent tasks
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Tencent (Hunyuan) |
|---|---|
| Release date | 20 Apr 2026 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Open weights [Hugging Face] |
| Parameters | 299B [Hugging Face] |
| Context window | 262K (262,144 tokens) [models.dev] |
| Max output | 236K tokens [models.dev] |
| Input | Text [models.dev] |
| Output | Text [models.dev] |
| Reasoning mode | Yes [models.dev] |
| Tool calling | Yes [models.dev] |
| Structured output | No [models.dev] |
| Hugging Face | tencent/Hy3-preview [Hugging Face] |
Hy3 preview API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| OpenRouter tencent/hy3-preview | $0.18 | $0.60 | $0.06 | 262K | OpenRouter, 4 Oct 2026 |
Frequently asked questions
What is the context window of Hy3 preview?
Hy3 preview has a context window of 262,144 tokens (262K) and can generate up to 235,929 tokens in a single response, according to models.dev.
How much does the Hy3 preview API cost?
Hy3 preview is listed from $0.18 per million input tokens and $0.60 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.
Is Hy3 preview open source?
Hy3 preview is an open-weight model: its weights are published on Hugging Face as tencent/Hy3-preview. Check the license terms before commercial use.
When was Hy3 preview released?
Tencent (Hunyuan) released Hy3 preview on 20 Apr 2026, according to models.dev.
Change history
No changes detected since we started tracking this model. We re-check every source daily.