Some dropped out of M.I.T., Georgetown and Stanford. Others decided not to go to college. They all say they could not afford to wait to build their own artificial intelligence

In a major shift, Google, OpenAI, Meta and venture capitalists — many of whom had once forsworn involvement in war — have embraced the military industrial complex.

In a major shift, the company is “open sourcing” two A.I. systems, freely sharing the technology with outside researchers and businesses.