ComfyUI DeepSeek_R1 Chat Node

A custom node for ComfyUI that integrates DeepSeek's powerful chat and instruction API, enabling seamless AI interactions within your ComfyUI workflows.

Features

• Dual Operating Modes

  • Chat mode with conversation memory
  • Single-turn instruction mode

• Vision Integration

  • Support for image context through vision descriptions
  • Seamless integration with ComfyUI's visual workflows

• Advanced Configuration

  • Customizable max token limit (up to 8192 tokens)
  • Optional reasoning display
  • Configurable chat history management
  • Built-in rate limiting protection

Installation

1. Clone this repository into your ComfyUI custom nodes directory:

cd ComfyUI/custom_nodes
git clone https://github.com/ShmuelRonen/comfyui-deepseek-chat.git

2. Get your DeepSeek API key:

   • Go to platform.deepseek.com/api_keys
   • Sign in or create an account
   • Generate a new API key
   • Copy the key

3. Edit theconfig.json file in the node directory:

{
    "deepseek_api_key": "your-api-key-here"
}

Important

Check API availability on this site: [DeepSeek API status](https://platform.deepseek.com/

Usage

Node Configuration

The node provides several input parameters:

• mode: Choose between "chat" and "instruct"
• prompt: Your input text/question
• max_tokens: Maximum response length (1-8192)
• show_reasoning: Toggle reasoning display
• clear_history: Option to reset conversation
• remember_chat: Enable/disable chat history persistence
• vision_description: Optional image context description. This can be used to:
  • Provide image descriptions for visual context
  • Connect with image generation nodes
  • Enable vision-language tasks
  • Process image analysis results

Example Workflow

1. Add the "DeepSeek-V3 Chat/Instruct" node to your workflow
2. Configure the node parameters
3. Connect it to other nodes as needed
4. Execute the workflow

Outputs

The node provides two outputs:

• latest_response: The most recent AI response
• full_chat_history: Complete conversation history

Rate Limiting

The node implements a 1-second minimum interval between requests to comply with API limits.

Error Handling

• Comprehensive error logging
• Graceful handling of API failures
• Clear error messages in node outputs

Technical Details

API Integration

API Endpoint: https://api.deepseek.com/v1/chat/completions
Model: deepseek-reasoner

• Supports full chat context with message history
• Handles authentication via API key
• Implements rate limiting protection

File Structure

comfyui-deepseek-chat/
├── deepseek_chat_node.py
├── config.json
├── chat_history.json
└── README.md

Dependencies

• Python 3.6+
• requests library
• ComfyUI environment

Contributing

1. Fork the repository
2. Create your feature branch
3. Commit your changes
4. Push to the branch
5. Open a Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details.

Acknowledgments

• Built for ComfyUI
• Powered by DeepSeek's API
• Inspired by community needs for AI integration in visual workflows