Perplexity AI's valuation has held near $20 billion post-money following its September 2025 Series E extension, with secondary market marks implying roughly $22 billion as of mid-October 2026. Annualized revenue run rate reached about $750 million by August 2026, up sharply from under $250 million at the start of the year, supported by the February 2026 launch of its Computer AI agent and usage-based pricing. Reports from August 2026 indicated Nvidia was in talks for a new round above $30 billion, though no closing has been confirmed. With only weeks left until December 31, 2026, trader sentiment hinges on whether a priced round or secondary activity can push marks materially higher before year-end, against a backdrop of strong revenue momentum and a planned 2028 IPO.