Perplexity's last confirmed post-money valuation stands at approximately $20 billion following its September 2025 Series E extension, with secondary-market marks near $19.5–20.5 billion as of October 2026 and a January 2026 tranche reported near $23 billion. Annualized recurring revenue has accelerated to roughly $750 million by August 2026, driven by the Perplexity Computer agent launch, usage-based pricing, and enterprise adoption, compressing revenue multiples to around 27–40x. Trader consensus on Polymarket thresholds through December 31 centers on whether a rumored Nvidia-led round above $30 billion closes before year-end or if secondary liquidity sustains gains amid the company's 2028 IPO target. Key swing factors include any finalization of strategic financing, quarterly ARR updates, and broader private AI market sentiment tied to Treasury yields and risk appetite.