Harnesses are everything: Baseten engineers compile a primer on choosing and optimizing LLM harnesses
philipkiely · x · 2026-10-14
alexker and Baseten's zakkeener42 compiled their months-long series on AI harnesses into a small book. Their thesis: harnesses are everything — they smooth out the jagged edges of model intelligence.
The book covers how to optimize existing harnesses, how to pick the right one for your use case, how harnesses and models co-evolve, plus thoughts on what the future might look like. Anthropic's philipkiely endorsed it as an exceedingly clear intro to harness selection and optimization.
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