Garry Tan: eval-driven loops for agent skills are a must — I just deleted one Opus 5.5 made obsolete
garrytan · x · 2026-11-07
Garry Tan argues eval-driven development loops are necessary for agent skills: every new model gets better, so you should remove skills you no longer need. He just deleted the /investigate skill because Opus 5.5 does it better without it — "you can feel the AGI tide rising."
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