AI now writes more than half of the Community Notes that make it onto X.
Since September 2025, X has let outside developers plug AI into Community Notes through a public API, so AI-drafted notes compete with human ones for the same slots. A new analysis of the program's June 2-29, 2026 data shows one client, the open-source Community Writer, generated 52% of notes rated "Helpful" and shown broadly to users. It also tends to get there first, posting the earliest surviving draft on 60% of flagged posts, ahead of both humans and rival AI writers. None of that changes who decides what ships - the same open rating algorithm still filters every note, AI or human, before it reaches a feed.
The more interesting number is where AI and humans don't overlap. Among posts with a Helpful note, 42% have only an AI-written one, while just 30% have only a human-written one - meaning AI is mostly filling gaps people were not motivated to cover themselves, not out-competing them on the cases people already cared about. That's a meaningfully different story than "AI is replacing fact-checkers": it reads more like AI doing the unglamorous volume work while raters keep the final veto.
Still, this is the direction every crowdsourced-moderation effort is heading, including Meta's shift away from paid third-party fact-checkers toward a Community Notes clone last year. An API this productive is exactly the kind of thing that gets leaned on hardest the next time a platform needs a note fast - and that's when the human veto gets tested.