> ## Documentation Index
> Fetch the complete documentation index at: https://docs.myrouter.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Hunyuan Image 3

Hunyuan Image 3 is an advanced text-to-image model. Simply provide a text description to generate high-quality images rich in emotion and storytelling, empowering your creative expression and artistic creation.

<Tip>
  This is an **async** API that only returns the task\_id of the async task. Use the task\_id to call the [Get Async Task Result API](/docs/models/reference-get-async-task-result) to retrieve the generated result.
</Tip>

## Request Headers

<ParamField header="Content-Type" type="string" required={true}>
  Enum: `application/json`
</ParamField>

<ParamField header="Authorization" type="string" required={true}>
  Bearer authentication format: Bearer \{\{API Key}}.
</ParamField>

## Request Body

<ParamField body="prompt" type="string" required={true}>
  Positive prompt to guide image generation content.
</ParamField>

<ParamField body="size" type="string" required={false}>
  Size of the generated image in pixels (width\*height). Each dimension ranges from \[256 \~ 1536]. Default: `1024*1024`.
</ParamField>

<ParamField body="seed" type="integer" required={false}>
  Random seed. A value of -1 indicates a random seed. Range: \[-1 \~ 2147483647]. Default: `-1`.
</ParamField>

## Response

<ResponseField name="task_id" type="string" required={true}>
  The task\_id of the async task. Use the task\_id to call the [Get Async Task Result API](/docs/models/reference-get-async-task-result) to retrieve the generated result.
</ResponseField>