After 1 hour with Fable on Ultracode:

  You've hit your monthly spend limit.
  /rate-limit-options
  What do you want to do?
   Adjust monthly spend limit: Unlimited ← or → to set a limit
    Wait for limit to reset

I've never hit a usage limit on my Max plan, basically ever -despite heavy xhigh usage on Opus 4.8.

I added $133 credits which I still had from somewhere. That lasted 27 minutes.

I think we are being prepared for a Post-IPO-World in terms of pricing.