I use Interactive Brokers - it's mainly a brokerage account, but if you have $10K+, they give you high short-term interest - Fed Benchmark rate - 0.5%:

https://www.interactivebrokers.com/en/accounts/fees/pricing-interest-rates.php

As of 2/25/2023, that is 4.080%. For me, that beats most of the High-Yield savings plans I get, though some of the rates by @Werewolfdad ( https://www.doctorofcredit.com/high-interest-savings-to-get/amp/ ) seem to be even higher so I am learning too here :)