Sam Altman has backed Oklo, a startup focused on developing small, advanced nuclear reactors that offer a clean and scalable energy solution. Oklo aims to revolutionize the energy sector by providing compact, efficient reactors capable of running on spent nuclear fuel, reducing both waste and reliance on fossil fuels.

Altman's investment in Oklo aligns with his broader vision of using innovative technology to address climate change. By supporting Oklo, Altman seeks to accelerate the adoption of nuclear energy as a critical part of the global transition to clean energy sources.