This startup sold Wall Street on AI. Its existential challenge is doing it again.

Hebbia's president and chief technology officer, Aabhas Sharma. Hebbia Hebbia has relaunched its core product, Matrix, to help bankers and investors dig through documents. The company is betting that a revamped Matrix can restore its brand cachet in a crowded market. Hebbia's CTO says that after it initially launched Matrix, "the whole market started copying it." Hebbia helped popularize AI for Wall Street. Now it's trying to stay ahead of the companies chasing the massive opportunity. The…