I want to use claude 3.7 sonnet api.

Do I need to upgrade to the pro plan for this? Do you think I should get the pro plan or should I use a balance system? I am doing php script and I have a lot of pages to print, which one would be more advantageous for me?

Hey, if you have an API key, you don’t have to switch to the Pro plan. However, the Pro plan is still better than your API key because it gives you access to Agent Mode, the ability to create and run custom modes for your tasks, call MCP tools, Cursor Tab, Auto-Run Commands, and much more. With your API key, you’ll only have access to the chat.