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chatgpt-on-wechat/docs/en/models/doubao.mdx
2026-05-22 12:25:22 +08:00

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---
title: Doubao
description: Doubao (Volcengine Ark) model configuration (Text / Image Understanding / Image Generation / Embedding)
---
Doubao (Volcengine Ark) supports text chat, image understanding, image generation (Seedream), and embedding. A single `ark_api_key` enables all capabilities.
<Tip>
All capabilities below can be configured in one place via the "Model Management" page in the Web Console, with no need to manually edit the configuration file.
</Tip>
## Text Chat
```json
{
"model": "doubao-seed-2-0-pro-260215",
"ark_api_key": "YOUR_API_KEY"
}
```
| Parameter | Description |
| --- | --- |
| `model` | Can be `doubao-seed-2-0-pro-260215`, `doubao-seed-2-0-code-preview-260215`, `doubao-seed-2-0-lite-260215`, etc. |
| `ark_api_key` | Create one in the [Volcengine Ark Console](https://console.volcengine.com/ark/region:ark+cn-beijing/apikey) |
| `ark_base_url` | Optional, defaults to `https://ark.cn-beijing.volces.com/api/v3` |
## Image Understanding
Once `ark_api_key` is configured, the Agent's Vision tool automatically uses `doubao-seed-2-0-pro-260215` to recognize images, with no extra setup required.
To manually specify a Vision model:
```json
{
"tools": {
"vision": {
"model": "doubao-seed-2-0-pro-260215"
}
}
}
```
## Image Generation
```json
{
"skills": {
"image-generation": {
"model": "seedream-5.0-lite"
}
}
}
```
Available models: `seedream-5.0-lite`, `seedream-4.5`.
## Embedding
```json
{
"embedding_provider": "doubao",
"embedding_model": "doubao-embedding-vision-251215"
}
```
The default model is `doubao-embedding-vision-251215` (multimodal embedding); the dimension (1024 or 2048) can be set via `embedding_dimensions` in the configuration file. After changing the embedding, run `/memory rebuild-index` to rebuild the index.