Comment by latexr

The comment says it’s v4. Since there’s no information on the page either way (funny, considering the original complaint), I took them at their word. If you don’t believe them, that’s up to you.

For what it’s worth, I do have access to v4 and it did give me an answer right now. But since I also know even v4 can give you wildly different answers to the same question even if you ask them one right after another, that doesn’t prove it either way.