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How to Choose a Model by Constraint, Not by Benchmark

How to Choose a Model by Constraint, Not by Benchmark

String AI Editorial Team

Stop starting from leaderboards. Write six constraints first, converge with a small golden set, and compare failure types instead of scores. A practical guide to choosing models that survive production.

When to Use an API Aggregation Layer (and When to Go Direct)

When to Use an API Aggregation Layer (and When to Go Direct)

String AI Editorial Team

An aggregation layer is not a default and not a mistake. It is a trade against four dimensions: integration cost, replacement cost, usage visibility, and the parts of the stack you cannot outsource. Here is how to decide, and how to keep your exit open.