At Voyager's speed it would take approximately 749,000,000 years to reach Canis Major Dwarf. OpenAI was founded in 2015. So it has been eight years. 749,000,000 - 8 = 748,999,992. 1.06809079e-8% of the time of a random astronomical time; rounded, that is about, uh, 0.00%ish.
I mean, don't get me wrong. It is a very expensive project. It just isn't astronomical. Anyone reading this and thinking - oh I could never do that even in hundreds of millions of years - that would be wrong. If you won the lottery or just made good financial decisions you could do a project comparable to this instead of getting a very nice house in the Bay Area.