Is it possible to get rate of BNB in USD by API?
Not: usdt or busd. Only in USD.

I spend a lot of time for find solutions but cant find.

There is no trading symbol against USD at binance.com. You can get many asset price in USD at binance,us

i have additional question: why your rate of bnb is different in different browsers?
when i load bnb page in Chrome i have some rate but when i load page in Firefox i have different rate

I don’t think rate can be different based on browsers.