Subodh Jena
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Harness Design: Planner, Generator, Evaluator for Production LLM Agents

May 8, 2026·8 min·AI

A harness is the set of components around a language model that turn a research prototype into a production system. Anthropic's three-agent architecture (planner, generator, evaluator) mirrors the GAN discriminator-generator dynamic and survives long-running applications.

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