$130B+sector volume already in 2026, vs $50B in all of 2025
70+companies with prediction-market projects (Event Horizon)
100Mmonthly users Meta reportedly targets for Arena
30+lawsuits pending over the legality of the category
The story
The biggest company in social just validated the category.
Per reporting by The New York Times and NPR, Mark Zuckerberg has made Arena a priority project: play money on real-world outcomes, Llama generating questions from trending topics, personalized market recommendations, a target of 100 million monthly users aged 18 to 34, and talks explored with Polymarket and Kalshi. Later reporting describes plans to fold it into Facebook, Instagram and WhatsApp - betting as conversation.
Buried in the internal documents is the detail that matters most: the same AI that writes and recommends the markets also resolves them, in near real-time. The model has the final say over whether something did or did not happen.
Arena is unannounced. Everything above is sourced from NYT and NPR reporting on internal documents; Meta has declined to comment, and the app may change or never ship.
2020
Meta tries this once
Forecast launches - a crowdsourced prediction app on points. It is shut down two years later; keeping markets accurate by hand proved too expensive.
2024
The election makes the category
Prediction markets break into the mainstream as traders use event contracts to read the US election in real time.
2025
The volume arrives
Kalshi and Polymarket clear a combined $50B in annual trading volume. Robinhood, DraftKings, FanDuel and dozens more pile in.
May 2026
The trust problem surfaces
The CFTC and DOJ bring the first insider-trading case involving a private company employee betting on prediction markets. By July, Goldman Sachs, Morgan Stanley and Bank of America are writing internal policies for employee trading on these platforms.
June 2026
Meta comes back for the whole category
Arena surfaces: AI-written, AI-recommended, AI-resolved markets on play money, aimed at 100M monthly users. Sector volume has already passed $130B this year; Bernstein projects up to $1T by 2030.
Meanwhile
Flashcast is already live
A question becomes a market in about three seconds, and Fermah Kernel settles it on-chain the moment the event occurs. No committee, no dispute window - and no model deciding what is true.
2025 · Kalshi + Polymarket volume$50B
2026 so far · already past$130B
2030 · Bernstein projectionup to $1T
Projection, not a fact - shown hatched for a reason.