For someone with a non-technical background who wants to have fun and ship MVPs quickly:

Codex if your priority is fast iteration, building from scratch, and staying in a conversational workflow.

Claude Code if you expect to spend a lot of time improving, extending, or maintaining larger projects.

If you eventually build products with thousands of lines of code, you'll likely find value in using both depending on the task.

None that should matter to you. Maybe you should start with something cheaper instead of SOTA e.g. Deepseek, Mistral, etc. They're not as good but not as bad as some say either. These cheaper LLMs will allow you to experiment much more until you get some sort of workflow on using LLMs and the switch to the expensive ones.