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chatgpt-minimal

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ChatGPT Minimal implements core ChatGPT features with a minimal codebase. Built with Next.js. Clean code, easy to extend. ChatGPT Minimal 以最小代码量实现了 ChatGPT 核心功能。基于 Next.js，代码清晰，易于扩展。

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# ChatGPT Minimal

English | [简体中文](./README.zh-CN.md)

ChatGPT Minimal implements core ChatGPT features with a minimal codebase. Built with Next.js. Clean code, easy to extend.

## Demo

Try the [ChatGPT Minimal Demo Site](https://chatgpt-minimal.vercel.app).

## Features

**What this project includes:**

- **Real-time streaming chat** with Server-Sent Events
- **Text + image chat** (image upload and paste)
- **Web search integration** (with source citations when supported by provider/model)
- **Markdown rendering** with syntax highlighting
- **Supports OpenAI, Azure OpenAI, and OpenAI-compatible providers**
- **Light/Dark mode toggle**

Looking for a more complete version? [ChatGPT Lite](https://github.com/blrchen/chatgpt-lite) builds on this project's codebase and adds:

- Persona system with custom system prompts
- Multi-conversation management
- File attachments (PDF, XLSX/CSV, text files)
- Voice input
- 40+ UI themes

## Deployment

For required environment variables, see [Environment Variables](#environment-variables).

### Deploy to Vercel

[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fblrchen%2Fchatgpt-minimal&project-name=chatgpt-minimal&framework=nextjs&repository-name=chatgpt-minimal)

### Deploy with Docker

For OpenAI account users:

```bash
docker run -d -p 3000:3000 \
  -e OPENAI_API_KEY="<YOUR_OPENAI_API_KEY>" \
  -e OPENAI_MODEL="gpt-4o-mini" \
  blrchen/chatgpt-minimal
```

For Azure OpenAI account users:

```bash
docker run -d -p 3000:3000 \
  -e AZURE_OPENAI_RESOURCE_NAME="<YOUR_AZURE_RESOURCE_NAME>" \
  -e AZURE_OPENAI_API_KEY="<YOUR_AZURE_OPENAI_API_KEY>" \
  -e AZURE_OPENAI_DEPLOYMENT="<YOUR_AZURE_DEPLOYMENT_NAME>" \
  blrchen/chatgpt-minimal
```

## Development

### Run Locally

1. Install Node.js 22+.
2. Clone this repository.
3. Install dependencies with `npm install`.
4. Copy `.env.example` to `.env.local` and fill in values.
5. Start the app with `npm run dev`.
6. Open [http://localhost:3000](http://localhost:3000).

## Environment Variables

### OpenAI

| Name                | Required | Description                                                                                       | Default Value            |
| ------------------- | -------- | ------------------------------------------------------------------------------------------------- | ------------------------ |
| OPENAI_API_KEY      | Yes      | API key from [OpenAI Platform](https://platform.openai.com/account/api-keys).                   | -                        |
| OPENAI_API_BASE_URL | No       | Base URL for OpenAI-compatible endpoints. If it does not end with `/v1`, the app will append it. | `https://api.openai.com` |
| OPENAI_MODEL        | No       | Model name for OpenAI mode.                                                                       | `gpt-4o-mini`            |

### Azure OpenAI

| Name                       | Required | Description                                         |
| -------------------------- | -------- | --------------------------------------------------- |
| AZURE_OPENAI_RESOURCE_NAME | Yes      | Azure OpenAI resource name (for example `my-openai-resource`). |
| AZURE_OPENAI_API_KEY       | Yes      | Azure OpenAI API key.                               |
| AZURE_OPENAI_DEPLOYMENT    | Yes      | Azure OpenAI deployment name (not the model name).  |

## Contribution

PRs of all sizes are welcome.

chatgpt-minimal

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