When does enrollment open for Cohort 2 of the AI Second Brain open? June 16, 2026 15:21 Updated Enrollment will open on August 26, same day as our launch webinar. The cohort runs from September 17 to October 8. Related articles What is the AI Second Brain? How much is the AI Second Brain? Do you offer discounts or scholarships? Who is the AI Second Brain suited for? What makes the AI Second Brain different?