The last time we talked to Bert Van Hoof, president and chief operating officer of Willow, Bert told us in December that WillowTwin was linking with Microsoft’s Sustainability Cloud to develop an AI-driven intelligent rules engine designed to integrate building systems and replicate the knowledge of aging operators.

Since our last talk, Microsoft has invested $10B in OpenAI, which unleashed GPT-4 on the world and soon will unveil a more powerful—by a factor of at least seven—GPT-5, a chatbot which can synthesize voices as well as images and language.

Jack Rogers



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