Perplexity, an AI startup competing with Google's search engine, has raised $63 million in a funding round.The funding round values Perplexity at $1 billion, marking a two-fold increase in valuation this year.Perplexity offers an AI chatbot that summarizes search results, offers citations, and helps users refine their queries.The company aims to get its product in the hands of every company in the US and is expanding into new regions.