Jean-Denis Gréze’s AI assistant is a silver fox who wears a little satchel, and her name is Ivy. Ivy is Gréze’s Townie—the personalized AI assistant at the center of his startup, Town. His choice of mascot, an homage to his prematurely grey hair, says something about the product’s philosophy: this isn’t a chatbot. It’s yours. (Mine is a rotund, furry creature named Algernon.) Town raised a $55 million Series A, led by Andreessen Horowitz, Fortune learned exclusively. Forerunner Ventures, First R...