OpenAI co-founder Ilya Sutskever raised $2 billion for his AI start-up Safe Superintelligence (SSI), valuing the company at $32 billion. Greenoaks led the funding round with $500 million. SSI, which currently has no product, last raised $1 billion at $5-billion valuation in September 2024. Meanwhile, OpenAI's ex-CTO Mira Murati's AI startup Thinking Machines Lab is targeting $2-billion seed round.