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Model routing: the cheapest model that passes

Every request hits your biggest, priciest model. The bill and the latency are brutal, and most of those requests were easy.

See how AI actually works, end to end.

This lesson is one stop on the full arc. Unlock all of it, and keep it for life.

What you get

  • The 30-lesson core, a finishable path from a word to agents
  • Goal tracks for using AI at work and building AI features
  • Boss labs that make you apply a whole act, not just recognize it
  • Spaced recall that brings each idea back before you forget
  • Course memory: every term defined, with links to where it first appears
  • A shareable capability card when you finish the core
  • Lifetime access on every device, every future lesson included

Not videos to watch. You predict, operate the machine, then prove it. That is why it stays.

86 interactive lessons across 8 acts. No videos, no code.

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