Will an openly downloadable model top a major public LLM leaderboard at any point in 2026?

Can an open, downloadable model actually top the leaderboard the whole industry watches — beating the closed frontier labs at their own game — at any point in 2026? We tracked the live Arena standings, the open-vs-closed gap and its trajectory, the 2026 frontier release pipeline, and what the prediction markets price, and committed to a calibrated probability. The number to anchor on. Built from 231 sources.

The probability and full reasoning unlock on purchase, and become public for everyone once the event resolves.