How to save tokens: from context to prompt caching
Essence
Saving tokens isn't stinginess; it's quality. Less clutter in the context means a cheaper request, a faster answer and higher accuracy, because the model isn't distracted by noise. Almost every technique boils down to three ideas: send less, generate less, and don't pay twice for the same thing.
The rest of this answer, with code and interview follow-ups, is in the DevPrep app.
Read the full answer in DevPrep