Moderating billions of items a day with an LLM on every one is too slow and too expensive. Learn the tiered funnel (cheap classifier then LLM then human), how to tune thresholds for precision versus recall, and how to keep up with adversaries.
← System Design for AI in Production / 91
Design an LLM-based content moderation system that screens user content at platform scale.
Moderating billions of items a day with an LLM on every one is too slow and too expensive. Learn the tiered funnel (cheap classifier then LLM then human), how to tune thresholds for precision versus recall, and how to keep up with adversaries.
Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.
Unlock the other 754 answers · ₹2,000 / $25includes both full courses · progress stays saved · 6 months · one payment · no auto-renew
LEARN THE BACKGROUND
No lesson covers this question directly yet. These teach the surrounding topic from the beginning.
Applied AI Engineering·The interviewPremium14mDriving the design conversationA design round is a conversation you are expected to lead, not a question you answer. This lesson is the shape that works, the four moments that decide the outcome, and the two classic ways strong candidates lose one.Applied AI Engineering·The interviewPremium12mTurning this course into a study planA concrete four-week plan mapping the seven modules onto the question bank, plus what to do differently if your interview is next week rather than next month.
UP NEXT ON YOUR JOURNEY
Next in this trackDesign a personalization service that tailors LLM responses to each user's context and history.Next in this trackDesign an AI writing assistant (Grammarly/Notion-style) for rewriting, grammar, and tone.Next in this trackDesign a customer-support automation platform that resolves tickets end to end with LLMs.
DISCUSSION · 0
No comments yet — be the first to share your approach.
