A meta-prompted 72B open-source model beat GPT-4 on real tasks. The technique: feed your actual inputs and outputs into an LLM, have it write a prompt, critique the output, fold feedback back in, repeat. Garry’s YouTube prompt is on version 27. Mitchell Hashimoto found the same prompt on a more powerful model can produce worse results without this loop. The compounding isn’t in the model — it’s in the prompt engineering cycle.
Feb 25, 2026 · 9 min