So I created an Anthropic console account (4o: “explain anthropic console to generalist” etc), and I put 25 USD on my account.
I then used the “Generate a prompt” feature which many has been talking about lately:

I then prompted for a prompt, and tested. I now have a prompt that was AI generated, and it cost me 7 cent USD.
Here is video of my process, and here is the cost breakdown.
I will experiment more with this Console and the prompt-generating.