OpenAI grabs headlines with a staggering $500 billion private valuation, but Palantir Technologies Inc. (NYSE:PLTR) offers investors a tangible, revenue-backed way to play the AI boom — albeit at lofty multiples.Track PLTR stock here.While OpenAI projects$13 billion in current-year revenue and roughly 3x growth, it remains private and inaccessible to most investors. Palantir, by contrast, is public, generating $4.16 billion in sales at 45% growth, with enterprise and government clients already using its AI ...