So ComfyUI started as a solo side project 👀

In early 2023, a developer known as "comfyanonymous" was experimenting with Stable Diffusion. Existing tools were fine for simple text-to-image generation, but frustrating if you wanted to chain models together, mix different passes, or control the exact steps of the pipeline.

So he built a completely new interface from scratch.
He took a totally different direction:

Instead of simple sliders, he built a visual, node-based graph.
You didn't just type text; you explicitly wired together the math - models, noise, latents, and samplers.

It was harder to learn, but gave users unprecedented, repeatable control over their workflows.

Gradually, through GitHub, Discord, Reddit, and YouTube, technical artists realized they finally had a true "node editor" for AI.

The real magic was its modularity. Because the architecture was open and flexible, the community started building custom nodes. Today, whenever a new AI model or technique drops, someone builds a ComfyUI node for it within days.

As the tool became a staple for power users, researchers, and professional pipelines, it grew too big for a solo maintainer.

But instead of closing the source code to make money, they took a different path. The project evolved into a formal company to support the ecosystem, keeping the core engine open-source while building cloud, enterprise, and collaboration services around it to ensure its future.

It seems, you don't always need to start with a pitch deck and a SaaS pricing tier. Sometimes the best path is to solve a deep technical pain point for power users, let an obsessed open-source community build an ecosystem around it, and figure out the business structure later.

What are your thoughts on this approach?

Image - Flux Schnell