Alphabet Inc. Chief Executive Officer Sundar Pichai says artificial intelligence has been a key focus of the Google parent since 2016, back when ChatGPT-maker OpenAI was in its infancy. After all, Google researchers invented the “T” in GPT (as in generative pre-trained transformer). It was a critical innovation that made conversational search using large language models possible.Somehow though, Google missed the big chatbot moment and has been playing catchup ever since. But Pichai, who sat down...