Goldman Sachs has released its 2026 World Cup predictions, and according to one of Wall Street's most powerful banks, Spain are the team to beat — given a 26% chance of lifting the trophy, ahead of France (19%) and Argentina (14%).
The model behind those numbers is built on nearly 20,000 matches dating back to 1978. It factors in historical performance, scoring talent, team momentum, and geography. The economists even built in a "winner's slump" penalty for Argentina, flagging that back-to-back World Cup winners are historically rare.
Sounds thorough. But Goldman also ran a million simulations before the 2018 tournament and landed on Brazil as their pick. Brazil went out in the quarterfinals. France — who Goldman gave the second-best odds — won the whole thing. A near-miss framed as a success, depending on how generous you're feeling.
Why the model has real limits
The Goldman team are upfront about what their model can't do: it doesn't account for player injuries, managerial quality, or squad depth in any meaningful way. Chief economist Jan Hatzius leads the report, but even he'd likely admit this isn't their core business.
Jacek Dmochowski, an engineering professor at The City College of New York, puts it bluntly. Goldman's inputs represent "a tiny sliver of all the information that's in the possession of the millions of people" who bet into online prediction markets. Those markets — Polymarket, Kalshi, Bet365 — absorb injury news, squad form, managerial press conferences, and the collective judgment of sharp money in real time.
Right now, both Polymarket and Bet365 have Spain below 20% — notably lower than Goldman's figure — with France rated similarly. The gap isn't massive, but it's telling. Markets are moving on more current information than a model built on historical averages.
What the numbers actually mean for bettors
Spain's World Cup odds look reasonably priced heading into 2026 — they're the reigning European champions, Lamine Yamal is already one of the most dangerous attackers in the world at 17, and the squad has genuine depth across the pitch. The Goldman number and the market number converging around that 20% range suggests there's broad consensus at the top.
Argentina's "winner's slump" discount is the more interesting angle. Goldman explicitly warned that defending champions tend to underperform, and the markets may already be pricing that in. Whether that's a genuine structural pattern or recency bias dressed up as analysis is a fair debate.
- Spain: 26% (Goldman) / below 20% (Bet365, Polymarket)
- France: 19% (Goldman) / similar to markets
- Argentina: 14% (Goldman), flagged for potential underperformance
- Host nations: USA 39%, Mexico 68%, Canada 50% to reach the Round of 16
Goldman's own economists describe this as a "fun exercise" — and that framing is probably right. The real-time efficiency of betting markets will always outpace a static model built in a research department. But for a broad-strokes framework of who the serious contenders are, the conclusions aren't far off what anyone watching football this past year would tell you anyway.
"It's impossible to know who was right," Dmochowski says. That's not a cop-out — it's just how football works.
