> It is very unlikely that LLM had access to original source code of Photoshop.

It doesn’t matter. It’s likely had access to the knowledge of somebody who worked on that source code.

I have worked at companies that have done clean-room implementations. I was not permitted to look at their source or interact with those teams, because I had been exposed to the source of what they were re-implementing in a prior job.

As a human with a mushy brain I was never going to remember the source, but the fact I had been proximate to it was enough to lock me out. You have no idea what the LLM trained on, so you can’t prove a LLM derived clone is a “clean-room” implementation.

It could have access for code of an older version with how there has been leaks of sources of various commercial applications over the years.

They have had access to plenty of A/GPL software. They are all highly problematic from an ethical and legal point of view.

If adobe use any AI tools to help develop photoshop, its all been loaded in. Or if its ever ended up anywhere on the internet, even in private