Atheists don't claim that there are no gods. It's is impossible to prove the non-existence of something, so if you make such a claim, you get into belief territory. Most atheists are agnostic atheists, i.e. I'll be happy to believe in your gods once you present evidence for their existence.
well if that's the case, I may very well be an antitheist. being raised as a Christian these terms really aren't familiar to me. I've just called myself agnostic and gone on my way.
Antitheists oppose religion, not gods. I'm an atheist because there's no reason to believe that anything supernatural exists, and I'm an antitheist because I think belief without evidence is inherently harmful.