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LLM vs Agent vs Harness, Explained by a Caveman

This story is from 2026-09-25. It is preserved in the archive; the latest stories are on the live feed.

LLM vs Agent vs Harness, Explained by a Caveman Everyone argues about AI agents. Half the people arguing can't say where the LLM ends and the agent begins. So here's the whole thing, explained by a caveman. The LLM: a big brain in a jar The LLM is a brain. A very big, very well-read brain. It knows…

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  1. 2026-09-25 14:04 · DEV Community — AI
    LLM vs Agent vs Harness, Explained by a Caveman

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