Source-labeled
The Support Page Names Computer 3.0. The Letters Name AI3, AI4, AI5, and AI6.
Tesla's AI-computer support page offers an upgrade from computer 2.0 or 2.5 to Full Self-Driving computer 3.0. It does not print HW3 or AI4. The Q4 2025 update targets a 50x improvement for AI5 relative to AI4, with production of AI5 and AI6 planned for 2027 and 2028. The Q2 2026 update says v14 lite on AI3 distills AI4's v14 series.