Hunt for Minds: Star AI Architect Andrew Tulloch Leaves Meta for Anthropic

Algorithms are still secondary to the brains creating them. On September 11, 2026, the Wall Street Journal (WSJ) confirmed the transfer of the year in the AI labor market: Andrew Tulloch, a key researcher and developer of the GPT-4o and o3 models, left Meta to join the Anthropic lab.

At his new company, Tulloch will tackle a critically important task: optimizing inference and improving the efficiency of computational models. This move illustrates a fundamental B2B trend: the war between labs has shifted from accumulating "hardware" to hunting for architects capable of squeezing the most out of available GPUs. The shortage of visionaries at this level forces Big Tech to inflate compensation packages to tens of millions of dollars. The success or failure of multi-billion dollar AI products now depends on the decisions of literally a few hundred engineers across the entire planet.

Source: Wall Street Journal / Bloomberg