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ComfyUI venice.ai API Node Usage Guide

Disclaimer: I just made this on a whim because someone wanted something similar to Together.AI custom nodes but use venice instead and I don't have access to any API keys for any of the mentioned services.

Setup

  1. Ensure you have a venice.ai account and API key
  2. Configure your API key in config.ini
  3. Install all required dependencies (should be done automatically by comfy?)

Node Configuration

Input Parameters

Required Parameters:

  • Prompt (String)

    • Your main generation prompt
    • Be specific and detailed for best results if using Flux

  • Negative Prompt (String)

    • Elements you want to avoid in the generation
    • Leave empty if not needed | Will be ignored if flux-dev or flux-dev-uncensored is selected as model

  • Steps (Integer)

    • Range: 1-30
    • Default: 20

  • Width (Integer)

    • Range: 512-2048
    • Default: 1024
    • Must be a multiple of 32
    • Common values: 512, 768, 1024 (1MP), 1440 (Flux | 2MP)

  • Height (Integer)

    • Range: 512-2048
    • Default: 1024
    • Must be a multiple of 32
    • Common values: 512, 768, 1024 (1MP), 1440 (Flux | 2MP)

  • Seed (Integer)

    • Range: 0 to max 64-bit integer
    • Default: -1 | Random
    • Reuse a seed with same prompt to reproduce an image

  • CFG (Guidance Scale) (Float)

    • Range: 0.1-15.0
    • Default: 3.5
    • Recommended range: 5.0-10.0 (SDXL) | ~3.5 (Flux)

Output

The node outputs a single image tensor compatible with other ComfyUI nodes.

Best Practices

  1. Prompt Engineering

    • Be specific and detailed in your prompts
    • Use descriptive adjectives
    • Include style references when needed

  2. Performance

    • Start with lower step counts (20-30) for testing
    • Increase steps for final generations
    • Use reasonable image dimensions (1024x1024 is standard)

  3. Error Handling/Troubleshooting

    • Check console for error messages
    • Verify API key is correctly configured
    • Ensure parameters are within valid ranges

Common Workflows

Basic Image Generation

  1. Add Together API Node to workspace
  2. Connect to a Load Image node
  3. Configure prompt and basic parameters
  4. Execute workflow

Advanced Usage

  1. Combine with other ComfyUI nodes
  2. Use seed control for consistent results
  3. Experiment with guidance scale for style control

Troubleshooting

Common Issues

  1. API Key Errors

    • Verify key in config.ini
    • Check API key validity
    • Ensure proper formatting

  2. Generation Errors

    • Verify parameter ranges
    • Check prompt length
    • Monitor API rate limits

  3. Image Quality Issues

    • Adjust step count
    • Modify guidance scale
    • Refine prompt

Examples

Basic Prompt Example

A beautiful landscape with mountains and lakes, cinematic lighting, high detail

Advanced Prompt Example

A stunning mountain landscape at sunset, volumetric lighting, 
golden hour, ultra detailed, professional photography, 
8k resolution, artistic composition

Negative Prompt Example

blur, haze, low quality, distortion, bad composition, 
oversaturated, unrealistic lighting

Support

For issues and feature requests, please use the GitHub issue tracker.