# Hunyuan A13B Instruct

> Hunyuan A13B Instruct is an open-weight language model from Tencent (Hunyuan), released on 8 Jul 2025. It accepts text and generates text, with a 131K-token context window and up to 118K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.14 per million input tokens and $0.57 per million output tokens (OpenRouter), across 1 provider we track.

Source page: https://www.aimodel.directory/models/hunyuan-a13b-instruct
Last verified: 4 Oct 2026

## Specifications

- **Developer:** Tencent (Hunyuan)
- **Release date:** 8 Jul 2025 (source: OpenRouter, https://openrouter.ai/tencent/hunyuan-a13b-instruct)
- **Status:** Generally available
- **Weights:** Open weights (source: Hugging Face, https://huggingface.co/tencent/Hunyuan-A13B-Instruct)
- **License:** tencent-hunyuan-a13b (source: Hugging Face, https://huggingface.co/tencent/Hunyuan-A13B-Instruct)
- **Parameters:** 80.4B (source: Hugging Face, https://huggingface.co/tencent/Hunyuan-A13B-Instruct)
- **Context window:** 131K (131,072 tokens) (source: OpenRouter, https://openrouter.ai/tencent/hunyuan-a13b-instruct)
- **Max output:** 118K tokens (source: OpenRouter, https://openrouter.ai/tencent/hunyuan-a13b-instruct)
- **Knowledge cutoff:** 31 Mar 2025 (source: OpenRouter, https://openrouter.ai/tencent/hunyuan-a13b-instruct)
- **Input:** Text (source: OpenRouter, https://openrouter.ai/tencent/hunyuan-a13b-instruct)
- **Output:** Text (source: OpenRouter, https://openrouter.ai/tencent/hunyuan-a13b-instruct)
- **Reasoning mode:** Yes (source: OpenRouter, https://openrouter.ai/tencent/hunyuan-a13b-instruct)
- **Tool calling:** No (source: OpenRouter, https://openrouter.ai/tencent/hunyuan-a13b-instruct)
- **Structured output:** Yes (source: OpenRouter, https://openrouter.ai/tencent/hunyuan-a13b-instruct)
- **Hugging Face:** tencent/Hunyuan-A13B-Instruct (source: Hugging Face, https://huggingface.co/tencent/Hunyuan-A13B-Instruct)

## API pricing (USD per 1M tokens)

| Provider | Input | Output | Cached input | Context |
|---|---|---|---|---|
| OpenRouter | $0.14 | $0.57 | – | 131K |

## FAQ

### What is the context window of Hunyuan A13B Instruct?

Hunyuan A13B Instruct has a context window of 131,072 tokens (131K) and can generate up to 117,964 tokens in a single response, according to OpenRouter.

### How much does the Hunyuan A13B Instruct API cost?

Hunyuan A13B Instruct is listed from $0.14 per million input tokens and $0.57 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.

### Is Hunyuan A13B Instruct open source?

Hunyuan A13B Instruct is an open-weight model: its weights are published on Hugging Face as tencent/Hunyuan-A13B-Instruct under the tencent-hunyuan-a13b license. Check the license terms before commercial use.

### When was Hunyuan A13B Instruct released?

Tencent (Hunyuan) released Hunyuan A13B Instruct on 8 Jul 2025, according to OpenRouter.

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Data licensed CC BY 4.0. Cite as: AI Model Directory, "Hunyuan A13B Instruct", https://www.aimodel.directory/models/hunyuan-a13b-instruct