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Anthropic
S15
MediumPremiumDesign an LLM Gateway / Model Router & Inference Proxy
Design an internal LLM gateway that every product team calls instead of hitting OpenAI, Anthropic, or Google directly.
InfrastructureCost OptimizationReliabilityRouting
Key Requirements
- Route requests to the right model based on complexity and cost
- Rate limiting and per-team cost tracking
- Semantic caching to reduce redundant API calls
- Automatic failover when a provider goes down
- Centralized logging, auditing, and usage dashboards
Interviewer Follow-ups
- Q1How do you decide which model to route a request to?
- Q2How do you handle a provider outage without dropping requests?
- Q3How do you prevent one team from exhausting the shared budget?