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I am a luddite. I finally have a reason to make something intricate with AI, however I have no idea which to use.

It seems "free" means you get to create an account. Its not a dealbreaker, just not ideal. Maybe I'm not stumbling on the ones that are free and without account creation.

Is there any online tools anyone would recommend? My goal is to not make something on my local machine, rather use what other nerds have already built.