关于它们收费的不同，AI给的解释

Fee comparison at a glance

Feature	Robinhood	Coinbase
Simple trading fees	Robinhood makes money from a price spread and rebates from market makers, rather than charging a direct commission. This means you may receive slightly less crypto for your dollar compared to the market rate.	The basic version of Coinbase charges a spread fee of about 0.5% and a higher base fee based on the transaction size and payment method. Fees can be as high as 4% for small debit card purchases.
Advanced trading fees	Not applicable. Robinhood offers only one interface for crypto trading.	Coinbase Advanced offers a tiered, maker-taker fee structure that rewards higher-volume traders with lower costs. For example, the highest-volume traders pay as little as 0.00% maker and 0.05% taker fees.
Hidden fees	While advertised as "commission-free," Robinhood's use of payment for order flow can result in less-favorable trade execution prices compared to platforms with direct access to exchanges.	The price spread fee is not always transparent to new users. You must check the preview screen before executing a trade to see the total cost.