According to The Atlantic, citing the new book "The AGI Chronicles," Daniela Amodei, co-founder and president of Anthropic, used plush toys with her husband, Holden Karnofsky, to simulate different management styles and discuss workplace issues during her tenure at OpenAI. She had friction with OpenAI executives such as Greg Brockman and Mira Murati, while Dario Amodei grew increasingly wary of OpenAI's leadership and the direction of advanced AI development. In 2020, the siblings ultimately left OpenAI and founded Anthropic, which has since grown into a major competitor to OpenAI, with a potential IPO valuation approaching $2 trillion.