'The End of Harness Engineering': a 4B model auto-iterates the agent scaffold
mtizard · x · 2026-11-15
A paper titled "The End of Harness Engineering" argues that hand-designing and coding the components around AI models — tools, instructions, workflows and execution logic — may be coming to an end: why not let the system improve its own infrastructure? The method: a small 4-billion-parameter model reviews the system's failures and errors, then proposes 8 different modifications to improve performance, iterating evolutionarily. Reposter mtizard comments that AI is moving toward "a neural core wrapped in an evolutionary algorithm", much like intelligent life.
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