Bezos-Backed Flourish Raises $500 Million to Build AI Modeled on Real Brain Function
Flourish raised $500M at a reported $2.5B valuation in 2026 to model AI on biological neurons, backed by Jeff Bezos, Lux Capital and Google Ventures. Co-founder Thomas Reardon IV (Columbia neuroscience PhD) works with Amazon ex-Williams and DeepMind’s Greg Wayne, who gets 20% time negotiated by Demis Hassabis. Bezos started with $50M after a two-page pitch and nearly doubled his stake.