Frontier models win benchmarks, cheap models win the invoice

AIFlow_ML · x · 2026-11-14

An opinion post on model selection: frontier models lead benchmarks but cheap models win on cost. The author notes Meta shipped Muse Ember and Rayline shipped ARC this week, both targeting the "boring" agent calls — tool calls, routing, parsing — and asks what share of your agent calls actually need a frontier model.

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