Nathan Lambert: rising training recipe complexity suggests RSI is still far off

natolambert · x · 2026-09-12

Hugging Face researcher Nathan Lambert discusses how long humans will stay at the center of AI research. He argues we are only approaching RSI (recursive self-improvement), not in it: frontier lab researchers are grinding on narrow tasks that accumulate into model capability. A key obstacle he flags: RSI requires reducing training recipe complexity, but recipe complexity has only been increasing—evidence that humans aren't yet removable from the loop.

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