mage through cli

I'm trying to run mage with my own OpenAI token, the running locally section on Github (https://github.com/wasp-lang/wasp/tree/main/mage#running-locally) recommends doing it through wasp cli.
I've gone through the CLI docs (https://wasp-lang.dev/docs/general/cli), need clarity on the following:

  1. What is the command for adding my OpenAI token to the cli ?
  2. How can I ensure that mage uses GPT-4 for all the steps (is there a flag or something?)
  3. Running locally github page suggests using wasp new:ai commands, however I couldn't find any reference for it.
Thanks!
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