Venture capitalists put $97 billion into artificial intelligence startups in the US last year — a new record in a year of multibillion-dollar megarounds for companies like Elon Musk’s xAI, OpenAI and Anthropic. The AI-focused deals represent an increasing share of all startup investment, according to new PitchBook data released Tuesday. Almost half of the total $209 billion raised by US startups last year went to AI companies, the research firm said, the highest portion on record....