> But not too fast: If you can hash too quickly you can launch parallel attacks to find duplicates or break entropy-hiding. For unique ids, the fastest runner loses the security race.

> Cuid2 has been audited by security experts and artificial intelligence, and is considered safe to use for use-cases like secret sharing links.

I'm getting some snake oil vibes from this... There absolutely shouldn't be anything like a random ID that is 'too fast' to compute. You might need a rate limit to stay within your collision bounds, but CPU usage is a poor way to do it.

And there is currently no publicly available "artificial intelligence" that would be useful in a security audit, unless you want to call fuzzers "AI".