Researcher: LLMs moved faster than I expected, but tool use isn't a new paradigm

artetxem · x · 2026-09-30

Researcher Mikel Artetxe reflects: five years ago he believed in LLMs, yet didn't expect today's progress without a major paradigm shift — "I was wrong." But he pushes back on formerly vocal skeptics now claiming vindication because "today's models do far more than predict the next token."

Coding agents run terminal commands by predicting the next token, he notes; no one claimed LLMs would solve everything without environmental interaction. The layer on top is thin, and tool use isn't a new paradigm — "Giving BERT a Calculator" appeared seven years ago. Science means updating beliefs on evidence; admitting your view changed makes you a better scientist, while insisting "I was right all along" sets a terrible example for the public and young scientists.

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