The claim is supported by two fetched secondary reports: crypto.news and Yahoo Finance's syndicated Proactive item both say the Financial Times reported Perplexity’s ARR exceeded $450 million in March and tie the acceleration to an AI-agent product launch and pricing changes. The crypto.news article specifically describes this as happening after Perplexity 'moved into AI agents,' closely matching the user’s statement. However, confidence is only medium because the underlying Financial Times article was not directly fetched in this run, and the provided X link could not be fetched. So the statement is likely true based on corroborated secondary reporting, but not directly verified from the primary FT text here.