Jeff Bezos Backs CuspAI in $400M Round, Valuing AI Materials Science Startup at $2.6B

Summary: Jeff Bezos's family office is joining a $400M round for CuspAI, a two-year-old UK startup using generative AI to accelerate materials science research.

Key Facts

• Investors: Bezos Expeditions and Kleiner Perkins; term sheets signed, deal not yet closed
• Valuation: $2.6B — up from $520M in September 2025, a roughly 5× jump in under a year
• Founders: Chad Edwards (quantum computing background) and Max Welling (ML professor, University of Amsterdam); advisers include Geoffrey Hinton and Yann LeCun
• Bezos separately backs Prometheus, an "artificial general engineer" startup for design and manufacturing, valued at $41B — both fit his thesis that AI's biggest near-term impact is in the physical world

Why It Matters

Materials discovery underpins batteries, semiconductors, and pharmaceuticals — domains where AI can compress multi-year experimental cycles to weeks. Bezos placing concurrent bets in materials AI and engineering AGI signals that "physical AI" is coalescing into its own investment category, distinct from the consumer LLM wave.

Read More

• Scientific research start-up CuspAI to raise $400m — Silicon Republic / Financial Times
• Jeff Bezos backs UK startup CuspAI in $400M round — Dealroom