Day 1: Your AI Model Is Fast. Why Are Users Still Waiting?

Day 1: Your AI Model Is Fast. Why Are Users Still Waiting? An architecture diagram generated by Archify. Client · Start a request timer · Architecture component Client Start a request timer Gateway · Validate; attach trace ID · Architecture component Gateway Validate; attach trace ID Bounded queue · Measure admission and wait · Architecture component Bounded queue Measure admission and wait Model replica · Measure prefill and decode · Architecture component Model replica Measure prefill and decode Response stream · Record first token and end · Architecture component Response stream Record first token and end Client display · Measure received output · Architecture component Client display Measure received output request accepted capacity ready tokens deliver Legend Frontend Backend Security Message bus External