Most devs overpay for Claude API by 3-16x. RPG Materia teaches you to fix that ā through 5 gamified missions, real code, and a GRIM owl who judges your choices.
⢠M1: Token audit (where your money actually goes)
⢠M2: Prompt caching (90% off repeated context)
⢠M3: Model routing (Haiku is 12x cheaper)
⢠M4: Output control (stop paying for silence)
⢠M5: Batch API (async = 50% off)
Free to play. Pay what you want. Certificate included.