Decart, which offers real-time generative video and GPU optimization tech, raised $300M at a ~$4B valuation, up from $3.1B after raising $153M in August 2025 (Robbie Whelan/Wall Street Journal)

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Robbie Whelan / Wall Street Journal: Decart, which offers real-time generative video and GPU optimization tech, raised $300M at a ~$4B valuation, up from $3.1B after raising $153M in August 2025 - Decart's valuation hits nearly $4B as investors pour capital into startups making AI computing efficient