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1. About ComfyUI Prompt Assistant

The Prompt Assistant is a very popular extension in ComfyUI. With the help of large model APIs provided by cloud service platforms such as SiliconCloud, it enables seamless prompt translation, expansion & refinement, and reverse-prompting from images directly within ComfyUI. It’s an essential tool for learning and using ComfyUI.

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Core Features

Prompt Translation: Instantly translate prompts between Chinese and English without manually setting source and target languages. Prompt Expansion & Refinement: Define different rules based on the characteristics of image-generation or video-generation models, and expand & refine prompts with one click. Image-to-Prompt Conversion: Use vision model APIs to convert image content into prompts with one click. Tag Presets: Save commonly used prompt tags and trigger words as presets for quick insertion.

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2. Installing Prompt Assistant in ComfyUI

ComfyUI Desktop App or Portable Version Search for “提示词小助手” or “Prompt-Assistant” in the Manager (make sure to change DB: local → DB: Channel(remote) in the Manager to find it), then select the latest version to install. Akiha Launcher Version In the launcher interface, go to “Version Management” → “Install New Extension.”
Enter https://github.com/yawiii/comfyui_prompt_assistant.git in the “Extension URL” field and click Install. Manual Installation Go to the GitHub repository, download the source code, and place it into the custom_nodes directory.

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3. Using SiliconCloud in Prompt Assistant

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3.1 Open the API Configuration Panel

After installing Prompt Assistant, go to ComfyUI Settings and find the “✨Prompt Assistant” option. On the right panel, click the API Manager button to enter the API configuration panel.

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3.2 Select SiliconCloud Service

In the provider dropdown menus for both LLM and Vision model configurations, change the selection to SiliconCloud.

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3.3 Fill in Model Information

By default, the model field is pre-filled with the free Qwen/Qwen2.5-7B-Instruct model. For better performance and faster responses, click the SiliconCloud API Application link in the interface, go to the SiliconCloud homepage, choose a suitable model from the Model Hub, copy the model name, and paste it into the field.

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3.4 Enter API Key

On the SiliconCloud API Keys page, create a new key. Copy the key, paste it into the API Key input box, and click Save. You’re ready to go!

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4. User Guide

Using Prompt Assistant is very simple—no need to add extra nodes or run additional startup steps. As long as a node contains a prompt input box or image content, the assistant will automatically appear. When you need to translate, expand, or reverse a prompt, simply click the corresponding button in the assistant’s UI to get it done effortlessly. For more detailed tips on using Prompt Assistant, visit the author’s homepage: 诶-阿伟哥.