Sarah Zeng
Sarah Zeng, Chief of staff at Braintrust / startup investor at Braintrust, posted 1 time in the last 90 days. That is about 0.1 posts a week; the most recent went up on Aug 14, 2026. All of them were text-only posts. Everything in that window was an original post, no reshares. Braintrust has 43 other people in the benchmark, including Jessica Wang, Ankur Goyal and Sacha Thompson-Sargoni.
What format they post
Also posting at Braintrust
Post counts are the public LinkedIn posts Imagine AI collects for this person, taken over the 90 days to Aug 14, 2026; reshares are left out of the post count and the format mix. Follower counts come from the last profile check. The band compares a typical post, the geometric mean of reactions on posts that have had two weeks to settle, with the Imagine AI research baseline of 20,000+ posts from B2B startups. How the benchmark is built.
