A 70-line model router: try the cheap LLM first, escalate only when the answer fails validation
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Most LLM features I see in production use one model for everything. It is usually the strong, expensive one, because that is what the prototype used and nobody wanted to find out what breaks with a cheaper model. A lot of real traffic is boring, though: classify a support ticket, pull three fields…
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- 2026-10-23 22:01 · DEV Community — AI
A 70-line model router: try the cheap LLM first, escalate only when the answer fails validation