According to Sawyer Merritt on Twitter, Tesla's Full Self-Driving (FSD) V14 reached 1.1 million active subscriptions as of December 31, 2025. Tesla also offered a 45-day free trial of FSD V14 to over 1.5 million HW4 Tesla owners in North America during late November and early December 2025. As reported by Sawyer Merritt, these trial periods concluded in January 2026, potentially impacting future subscription levels. This milestone highlights Tesla's growing footprint in AI-powered autonomous driving, presenting significant business opportunities for software-based automotive revenue streams.