ComfyUI OpenAI Compatible API Node

By yeeyouView on GitHub →

A ComfyUI custom node that supports OpenAI-compatible APIs, allowing it to call any large-language-model service compatible with the OpenAI API format (such as vLLM, LM Studio, Ollama, LocalAI, etc.).

How much VRAM does ComfyUI OpenAI Compatible API Node require?

Direct Answer: The ComfyUI node ComfyUI OpenAI Compatible API Node requires a minimum base VRAM of 128MB and is optimized for GPUs with at least 4GB of VRAM. Low VRAM mode is fully supported for resource-constrained setups.

High (2-4GB)
Base VRAM:
128MB (0.1GB)
Recommended GPU:
4GB+ VRAM
Low VRAM Mode:
✓ Supported
Estimation Confidence:
MEDIUM

Interactive VRAM Compatibility Estimator

Estimated Total VRAM: 3.00 GBTarget: 8 GB
✅ Comfortable Fit

Your GPU has plenty of headroom. You can run this node safely with your active configurations!

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What Python packages are required for ComfyUI OpenAI Compatible API Node?

Direct Answer: Running ComfyUI OpenAI Compatible API Node requires installing the following Python package dependencies: numpy, pillow, requests, torch. Ensure your ComfyUI environment has these packages active before launching.

requirements.txt
numpy
pillow
requests
torch

Interactive Setup & Dependency Resolver

Operating System:
Environment Type:
Run this terminal command in your ComfyUI root folder:
# Loading command...

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Frequently Asked Questions

How much VRAM does ComfyUI OpenAI Compatible API Node require?

ComfyUI OpenAI Compatible API Node requires a minimum of 128MB (0.1GB) of VRAM for base operation. For optimal performance, a GPU with at least 4GB of VRAM is recommended. This node supports low VRAM mode for resource-constrained setups.

Can I run ComfyUI OpenAI Compatible API Node on an RTX 3060, RTX 4070, or RTX 4090?

✅ RTX 3060 (12GB): Yes, fully compatible with 10.7GB headroom. ✅ RTX 4070 (12GB): Yes, fully compatible with 10.7GB headroom. ✅ RTX 4070 Ti (16GB): Yes, fully compatible with 14.3GB headroom. ✅ RTX 4090 (24GB): Yes, fully compatible with 21.5GB headroom

What PyTorch version does ComfyUI OpenAI Compatible API Node need?

ComfyUI OpenAI Compatible API Node requires the following PyTorch-related packages: torch. Ensure your ComfyUI environment has these installed. Ensure your PyTorch installation matches your CUDA version (use torch.version.cuda to check).

What Python packages are required for ComfyUI OpenAI Compatible API Node?

To run ComfyUI OpenAI Compatible API Node, you need to install: numpy, pillow, requests, torch. You can install these using pip or add them to your requirements.txt file.

How can I reduce VRAM usage when running ComfyUI OpenAI Compatible API Node?

ComfyUI OpenAI Compatible API Node supports low VRAM mode. To reduce memory usage: (1) Enable --lowvram or --medvram flags in ComfyUI, (2) Reduce batch size to 1, (3) Use fp16 or fp8 precision if supported, (4) Close other GPU applications.

How do I install ComfyUI OpenAI Compatible API Node in ComfyUI?

To install ComfyUI OpenAI Compatible API Node: (1) Navigate to your ComfyUI/custom_nodes directory, (2) Clone the repository: git clone https://github.com/yeeyou/ComfyUI-OpenAI-Compatible-API, (3) Install dependencies: pip install -r requirements.txt (if present), (4) Restart ComfyUI. Alternatively, use ComfyUI Manager for one-click installation.