OpenAI's next model is being designed by another model in a sign that AI is reaching "super intelligence," SoftBank CEO Masayoshi Son told CNBC. The billionaire's comments come amid a warning from Anthropic that AI development may need to be slowed down to deal with the implications of the rapid pace of improvement. Son runs SoftBank, one of the world's biggest tech investors and one of the largest OpenAI shareholders. In an interview with CNBC on Monday, Son said he had spoken to OpenAI CEO