ComfyUI valuation reaches $500M as content creators seek more control over AI-generated media

ComfyUI, a startup that helps content creators control image, video, and audio output from deployment models using a node-based workflow, has raised a $30 million funding round at a $500 million valuation.

The round was led by Craft Ventures, with participation from other investors including Pace Capital, Chemistry and TruArrow.

ComfyUI began as an open source project in 2023, shortly after deployment models were introduced. At the time, models like OpenAI’s Midjourney and DALL-E barely worked, and often made major errors, such as adding extra fingers to hands.

To address these limitations, the project founders developed a modular framework that gives creators precise control over every step of the production process.

Their tool gained so much traction among creative professionals that it eventually evolved into an official startup. In late 2024, ComfyUI raised $19 million in Series A funding from investors including Chemistry Ventures, Cursor Capital, and Guillermo Rauch, founder of Vercel.

Although the latest publishing models have come a long way from adding a sixth digit to the hands, the need for the granularity that ComfyUI offers is increasingly growing.

“If you think about a typical speed-based solution, like Midjourney or ChatGPT, you’re asking for something, which is… [gets only] “There’s 60%-80%. But to change the remaining 20%, you have to try this slot machine,” Yolande Yan, co-founder and CEO of ComfyUI, told TechCrunch.

Yan (pictured left) compared the process to playing in a casino because asking the model to make a small change can lead to completely different output, including overwriting parts that were already perfect.

ComfyUI’s node-based interface allows creators to bind specific components to the creation process, giving them full control over the quality of their final output.

“You can’t easily move this message into the prompt box [of a foundational model]Yan said.

The creators seem to agree, as ComfyUI claims to have over 4 million users.

The tool is used by creative professionals for visual effects, animation, advertising, and even industrial design.

The startup says its offerings have become an essential tool of the trade for technical artists and other creatives, so much so that it’s not uncommon to see “ComfyUI artist or engineer” listed as a job title on studio job boards.

Although the basic video and photo models continue to improve, Yan claims they are far from perfect, and a tool like ComfyUI will continue to be in high demand.

“In a world where AI will become ubiquitous, the relaxed version of the human-in-the-loop approach will ultimately win the most attention,” he said.

ComfyUI’s competitors include Weavy, a startup acquired by Figma last year.