In any case what matters is what is enforced in practice. It will be a mild inconvenience to switch providers on Openrouter.
If Anthropic or OpenAI decide to apply those same arbitrary terms, you are SOL.
Yeah, I've compared both. The US companies generally aren't as vague, and they don't claim ownership over inputs and outputs.
>you retain all rights, title, and interest in the Prompts ...
However, it does grant them an irrevocable license to do, effectively, anything with the data
Not a lawyer but I think the practical difference is you can still license to others, sell, sue IP infringers