Menlo Park‑based Odyssey closed a $310 million Series B, lifting its valuation to $1.45 billion. The round was led by Natural Capital and featured Amazon, AMD Ventures, EQT, Google Ventures, IQT and Signal Rank. Odyssey builds AI world models that generate multimodal simulations of real‑world environments, bringing its total capital raised to $337 million. Investors see strong demand for immersive AI. The deal tops a modest week for mega‑fundings.

Fintech platform Chronograph secured a $140 million growth round from Sixth Street Growth, pushing its lifetime funding to $160 million. AI infrastructure firm Hydra Host raised $100 million Series A, while cybersecurity startups Ent. AI and Twenty Technologies each closed $100 million rounds, the latter valued at $1 billion. Quantum‑computing player Atom Computing added a $100 million Series C and a $100 million U.S. Department of Commerce LOI, underscoring sector breadth.

Outside the United States, Chinese chatbot maker Deep Seek announced a roughly $7.4 billion Series A, but investors receive stakes in a founder‑controlled LLC, face a five‑year lockup and hold no voting rights. The colossal, atypical structure highlights growing appetite for AI even amid tighter capital markets. Overall, the week delivered fewer mega‑deals, reinforcing a slowdown in large‑cap venture activity.