Is Coinbase pro better than Coinbase API?

Could you elaborate on the comparison between Coinbase Pro and the Coinbase API? I'm curious to understand the key differences in terms of functionality, performance, and user experience. For instance, does Coinbase Pro provide more advanced trading features compared to utilizing the API directly? Or does the API offer more flexibility and customization for experienced traders? Also, is there a significant difference in transaction fees or speed of execution? I'm interested in hearing your perspective on which platform may be better suited for various types of users.