**Trader consensus on the Polymarket market heavily favors "No" at 97.9% implied probability** because the sole source of speculation—a January 2026 predictions piece from The Information—has produced zero confirmed negotiations, letters of intent, or regulatory filings between OpenAI and Pinterest. OpenAI has instead completed smaller acquisitions focused on AI infrastructure and tooling, such as Ona in June 2026, while advancing its own multimodal models and preparing for potential IPO steps amid antitrust scrutiny tied to its Microsoft relationship. Pinterest continues independent expansion, including its tvScientific deal and AI-driven shopping features, with no executive commentary signaling a sale. A deal would face substantial regulatory, valuation, and integration hurdles unlikely to close before year-end, though a sudden strategic pivot toward consumer commerce data or unexpected policy shifts could theoretically alter the trajectory.