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Sam Altman

blog.samaltman.comadded August 2026

The Virus

Sam Altman7 Mar 2020

Although I still hope things will go differently, the experts I’ve spoken to think we are likely to face a global tragedy—hundreds of thousands of deaths from Covid-19.

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Reinforcement Learning Progress

Sam Altman25 Jun 2018

Today, OpenAI released a new result. We used PPO (Proximal Policy Optimization), a general reinforcement learning algorithm invented by OpenAI, to train a team of 5 agents to play Dota and beat...

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