Either you view LLM code as stolen, in which case you cannot get permission of the original owners, or you accept that LLM code is not copyrightable and has no original owners.
I no longer know if this is a real person who is simping for Anthropic and will be ultimately enslaved by Anthropic or if this is an Anthropic ad to have "proof" for the high demand of their services.
In both cases you cannot get permission.