Sam Altman. Anna Moneymaker/Getty Images OpenAI CEO Sam Altman is backing a stealthy physical AI startup run by former Tesla and Meta employees, in the latest sign that investors are rushing into robotics. The startup, called Alfred, is also being funded by Khosla Ventures, SV Angel, Chapter One, and others, according to internal documents reviewed by Business Insider. The startup is aiming to raise at a $40 million valuation, co-founder Ankit Ukil told Business Insider. Aflred is run by Ukil, a former Tesla designer, and Dömötör Gulyas, a former engineer at Meta Reality Labs. Alfred is emerging as investors pour money into physical AI, a category built around bringing AI to machines that move through the real world — like robots. In April alone, physical AI startups raised around $5.3 billion in VC funding, according to Crunchbase data. Big Tech companies are also flocking to place their bets in the robotics arms race.…