Perplexity AI is in advanced talks to raise $500 million in a funding round that would value the startup at $14 billion, the Wall Street Journal reported on Monday, citing people familiar with the matter. Venture capital firm Accel is set to lead the round, the report said. Perplexity did not immediately respond to a Reuters request for comment. The Nvidia-backed startup provides artificial intelligence search tools that deliver information summaries to users, similar to OpenAI's ChatGPT and