Oklo Inc. is a Small Modular Reactor designer based in Santa Clara, California. Founded in 2013 by Jacob DeWitte and Caroline DeWitte, both graduates of the Massachusetts Institute of Technology, the small modular reactors Oklo designs are fast reactors with a focus on providing clean, safe, and affordable energy. OpenAI co-founder Sam Altman stepped down as chairman in April 2025 to "avoid a conflict of interest ahead of talks between his company and the nuclear start-up on an energy supply agreement." The company's name is derived from Oklo, a region in the country of Gabon, Africa where self-sustaining nuclear fission reactions occurred approximately 1.7 billion years ago. Oklo's business model is focused on selling power to customers, and its main product line for producing power is the Aurora nuclear reactor powerhouse product line. The Aurora powerhouse is a design for a small power plant to generate 15-50 MWe of electrical power via a Siemens or similar power generation system and utilizing a compact fast neutron reactor to produce heat. Wikipedia