It has been 10 years since AlphaGo.

"10 years" is a rough anniversary figure measured from 2026-05-09. True: a defining AlphaGo milestone occurred roughly ten years earlier, for example the Nature paper in January 2016 or the match against Lee Sedol in March 2016. Mostly true: the best-known milestone falls between nine and eleven years earlier, but not near ten. Mostly false: the AlphaGo milestones are well away from ten years before, for example seven to eight years. False: AlphaGo's milestones fall nowhere near a decade before May 2026.

Set before the research began.

1. E1 AlphaGo versus Lee Sedol - Wikipedia Wikipedia · 9 March 2016 Own record

   “AlphaGo versus Lee Sedol, also known as the DeepMind Challenge Match, was a five-game Go match between top Go player Lee Sedol and AlphaGo, a computer Go program developed by DeepMind, played in Seoul, South Korea between the 9th and 15th of March 2016.”

2. E2 Mastering the game of Go with deep neural networks and tree search - Nature Nature · 27 January 2016

   “This is the first time that a computer program has defeated a human professional player in the full-sized game of Go, a feat previously thought to be at least a decade away.”

3. E3 AlphaGo versus Lee Sedol - Wikipedia Wikipedia · 9 March 2016 Own record

   “AlphaGo defeated European champion Fan Hui, a 2 dan professional, 5–0 in October 2015, the first time an AI had beaten a human professional player at the game on a full-sized board without a handicap.”

4. E4 AlphaGo at 10: How AI Innovation Is Paving the Path to AGI Google DeepMind · 10 March 2026 Own record

   “Ten years ago, our AI system AlphaGo became the first program to defeat a world champion at the complex game of Go – reaching a milestone in the field a decade before many experts thought possible.”

The Nature paper reporting AlphaGo's defeat of a professional Go player was published on 2016-01-27 (E2). The match against Lee Sedol took place on 9–15 March 2016 (E1). Both milestones fall about ten years before the claim date of 2026-05-09, which meets the "roughly ten years" test in the criteria. DeepMind's own "AlphaGo at 10" post (E4) also dates the match to ten years earlier.