最后更新 08-03-2026
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Gradio
Gradio 让你只需几行代码即可将任何 Python 函数或机器学习模型封装成网页演示。这个开源 Python 库提供 40 多种 UI 组件，支持图像、音频、视频、聊天、数据框和 JSON，然后在本地提供界面或永久部署到 Hugging Face Spaces。运行 pip install gradio，定义你的函数，调用 demo.launch() 即可在 localhost:7860 获得浏览器界面。
Streamlit 和 Dash 也能构建 Python 网页应用，但 Gradio 专为模型演示设计：gr.Interface 封装单一预测函数，gr.ChatInterface 处理聊天机器人，gr.Blocks 支持多步骤布局，如 Automatic1111 Stable Diffusion UI。share=True 标志可在几秒内创建临时公共 URL，没有自己搭建托管环境很难实现。
机器学习工程师、研究人员和爱好者使用 Gradio 在生产前快速原型界面。它要求 Python 3.10 或更高版本，无需 JavaScript 或 CSS 知识，免费且开源，并可选择在 Hugging Face Spaces 免费托管。
用
gr.Interface(fn, inputs, outputs)在不到10行Python代码中构建一个可用的演示40多种内置组件，支持图像、音频、视频、3D、聊天、图表和数据框
在Hugging Face Spaces上免费永久托管，支持自动扩展和可分享的URL
demo.launch(share=True)在几秒钟内创建一个临时公共链接，如https://xxxxx.gradio.liveGradio 6新增MCP支持、自然语言应用编辑的vibe模式，以及通过
gradio app.py实现热重载拥有43,000多个GitHub星标，提供从Python或JavaScript查询任何Gradio应用的客户端
从Python函数到可分享网页演示的最快路径，通常不到10行代码
无需前端技能；处理JavaScript、CSS和托管复杂性
在Hugging Face Spaces上免费永久部署，生态系统庞大
仅支持Python构建UI；不适合需要自定义React前端的团队
复杂的多页面应用需要Blocks，其学习曲线比Interface更陡峭
临时分享链接依赖你的本地机器保持在线
Is Gradio free to use?
Yes, Gradio is free and open source under an Apache 2.0 license. You can install it with pip, run demos locally, and deploy permanently to Hugging Face Spaces at no cost. There is no paid tier on the Gradio library itself.
How do I install Gradio?
Gradio requires Python 3.10 or higher. Install it with `pip install --upgrade gradio` in a virtual environment. Run your app with `python app.py` or use `gradio app.py` for hot reload during development.
Can I share a Gradio demo without hosting?
Yes, pass `share=True` to `demo.launch()` and Gradio creates a temporary public URL like https://xxxxx.gradio.live. Anyone can access the demo while your local machine runs the model. For permanent hosting, deploy to Hugging Face Spaces.
What is the difference between Interface and Blocks in Gradio?
Gradio Interface is a high-level wrapper for single-function model demos with defined inputs and outputs. Blocks is a lower-level layout system for custom UIs with multiple data flows, conditional visibility, and complex interactions, used by apps like Automatic1111.
Does Gradio support chatbots?
Yes, Gradio includes `gr.ChatInterface`, a high-level class that creates a full chatbot UI from a single Python function. It handles message history, streaming, and layout without requiring custom frontend code.
Where can I host a Gradio app permanently?
Hugging Face Spaces is the most popular permanent hosting option for Gradio apps and is free. Spaces provides auto-scaling, a public URL, and integration with the Hugging Face model hub. Gradio also supports custom server deployment via `gradio.Server`.