Overview
ComfyUI can act as a common node-based interface for external open-source AI tools. Integration usually requires more than installing one node: the workflow may need custom-node code, supporting dependencies, one or more model files, manually created directories, and additional graph connections.
InstantID illustrates the complete integration pattern. It takes a reference face and applies that identity to a new generation. The same mechanism can support face swapping across styles or consistent characters across a sequence of images.