The directory is a list of US and Canadian institutions kept in this project as an editorial snapshot. Each entry shows the yield and account notes stored with that institution. Choosing a bank opens the description. It does not submit an application and it does not fetch a rate from the bank.
A listed savings yield is the figure stored for that institution at the time the snapshot was written. Two banks can show different yields because the snapshot recorded different figures. Neither figure is a promise that the account still pays that yield today.
Yields are not live quotes. The page does not open accounts, and it does not know a branch’s current promotion. Insurance coverage, foreign-exchange spreads, and monthly fees should be read on the institution’s own site.