XPT (Existential Risk Persuasion Tournament) — Founded Date: 2022

NoteThe source directly confirms that the XPT ran in 2022 with 169 participants (80 experts + 89 superforecasters = 169 total). The claim's founded date of 2022 is confirmed by the source text stating 'In 2022, the Existential Risk Persuasion Tournament (XPT) brought together...' The participant count of 169 also matches the abstract's statement of '169 forecasters.' The source is the official working paper about the XPT itself, so subject identity is clear.