
Lukasz KaiserResearcher
OpenAI
Member of Technical Staff
via OpenAI
Researcher
Eldan is a mathematician and machine-learning researcher who, at Microsoft Research, co-authored "TinyStories" and the "Textbooks Are All You Need" work behind the Phi small-language-model series, alongside results in high-dimensional probability. He works at OpenAI.
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Last editorial review: August 14, 2026