The film 2001 came out over 50 years ago, and I think HAL is a pretty common reference point for a "what is 'real AI'?" target. Until we have HAL and people are saying that it's not AI, I don't think the target is moving. ;) At least as far as "chatbots" go.
Alternately, you've got the also-very-old Turing Test as your chatbot target.
Alternately, you've got the also-very-old Turing Test as your chatbot target.