Aether

Aether AI is a San Diego, California-based frontier AI company building causal world models for physical AI and robotics applications. Founded by Professor Biwei Huang, an assistant professor at UC San Diego and recognized researcher in causal discovery and machine learning, Aether is taking a fundamentally different approach to AI than the prevailing scaling paradigm. Rather than relying on pattern-matching across statistical correlations, Aether's causal world models are designed to understand the underlying mechanisms behind events, reason about what would happen under different interventions, and operate reliably in complex environments. The company's first target is physical AI and robotics, where systems must understand how their actions change the world around them. Aether closed a $20 million seed round in June 2026, led by MPCi with participation from Inno Angel Fund, SWC Global, and Unity Ventures.