AI and Human R&D Labor are Currently Complements; Extreme Progress Needs Substitution

RyanGreenblatt · x · 2026-08-13

Addressing why human-level AI R&D ability is a privileged milestone, researcher Ryan Greenblatt provides his analysis.

He notes that currently, human R&D labor and AI labor act as complements rather than substitutions. Therefore, reaching extreme rates of progress likely requires AI to become capable enough to enter a "substitute" regime. However, even these highly capable AIs might still be significantly worse than humans in certain aspects.

Related event: Why Human-Level AI R&D is a Critical Milestone(2 posts)→

Original post →

More from AGI Musings

AGI Musings channel →