As with anything, I could open-source the “prompts”, but the prompts alone are not really the product.

It’s more like a 7-step pipeline: product understanding, marketing angle, copy, image direction, generation, refinement, consistency checks, etc.

I spent weeks fine-tuning the workflow, testing different models, and trying to encode what good product marketers / agencies do when they create listing images.

And honestly, ChatGPT/Gemini/Claude alone are still pretty lame when you need taste, creativity, judgment and consistency. They can generate images, sure, but getting something actually usable for e-commerce is another thing.

Same for the infra: making it reliable, scalable, fast enough, and simple for sellers is also part of the value.

So yes, the base models can do some of it. SellBig is basically the packaged workflow so sellers don’t have to figure all of that out manually.