← System Design for AI in Production / 70

Design a cost-control and quota system for an internal LLM platform serving many teams.

Give every team an LLM API key and your bill becomes a mystery with a six-figure surprise at month end. Attributing, limiting, and optimizing spend is a platform feature. Here is how to build it.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

Give every team an LLM API key and your bill becomes a mystery with a six-figure surprise at month end. Attributing, limiting, and optimizing spend is a platform feature. Here is how to build it.

Unlock the other 750 answers · ₹2,000 / $25Your progress and mastery stay saved · 6 months · one payment · no auto-renew

UP NEXT ON YOUR JOURNEY

Next in this trackDesign a system that monitors the quality of millions of AI support conversations and flags the bad ones.Next in this trackHow do CAP and consistency tradeoffs apply to an ML feature store and online serving?Next in this trackDistribute a 10GB file from one bandwidth-limited source to thousands of machines as fast as possible.

DISCUSSION · 0

No comments yet — be the first to share your approach.