Blackletter raised $6 million in seed funding led by Lerer Hippeau to develop its AI legal platform and add lawyers and engineers, the firm announced on November 9, 2026. Seven Stars, Maple VC, Garage Capital and Ripple Ventures also participated. Individual backers included Cohere co-founders Aidan Gomez, Ivan Zhang and Nick Frosst, Twelve Labs CEO Jae Lee and Adaption Labs CEO Sara Hooker. Jonathan Rosenbluth, David Stewart and Avi Brudner co-founded Blackletter. Rosenbluth, the CEO, and…