How much is kai in usd?

Excuse me, could you please clarify what you mean by "kai"? Is it a specific cryptocurrency or token that you're inquiring about? If so, the value of any cryptocurrency or token in US dollars can vary significantly depending on market conditions and the exchange where you're looking to make the conversion. As such, I would recommend checking a reputable cryptocurrency exchange or price aggregator website to get the most up-to-date and accurate information on the current value of "kai" in USD.