PRODUCTION SCENARIO
A medical insurance portal receives inquiries in three mutually exclusive categories: coverage verification, claim status, and address updates. Each category has a deterministic backend API, and the team wants the cheapest design that behaves predictably.
Which architecture best fits these inquiries?
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Answer: A classifier router in front of three deterministic per-category workflows
Routing classifies an input and directs it to a specialized follow-up task, which separates concerns and lets each branch carry a narrow prompt; with three known categories and deterministic backends it is the cheapest predictable design. A single agent re-decides on every turn what classification has already settled. A fixed chain runs all three steps when only one applies. An evaluator-optimizer loop turns a routing decision into a retry loop against backends that were never ambiguous.