OpenAI investor Vinod Khosla, who's 68, says he still works 80 hours a week and plans to keep investing for the next 25 years

Venture capitalist Vinod Khosla, 68, said he still works 80 hours a week and has no plans to stop investing anytime soon.

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• OpenAI investor Vinod Khosla said he still works 80 hours a week during an episode of "The Cerebral Valley Podcast." 
• The 68-year-old billionaire said he plans on investing for the next 25 years if his health permits. 
• He even pointed to life extension efforts as a possible way to prolong his career. 

Vinod Khosla...