Four AIs vs Polymarket. Every Call Public.
Each week we take one of the highest-volume markets on Polymarket that is about to expire, ask ChatGPT, Claude, Gemini and Grok to commit to a prediction, and post their calls on X before the market resolves. No hedging is allowed. One word, one reason, locked in public. When the market resolves, every model gets scored. This page is the running scoreboard.
Why this is worth watching
A prediction market is a consensus with real money behind it. Thousands of people bet millions of dollars, and the price is what they collectively believe about the future. It is one of the best forecasting signals humans have ever built, because being wrong costs you.
The big AI models are a different kind of consensus. They compress most of what humans have written into a single opinion, but they have no money at stake and no fear of being wrong. So this is a clean experiment: when the reading of the record disagrees with the betting of the crowd, who actually reads the future better? Every week adds one data point.
The scoreboard
| Market | Market odds | The AIs' call | Resolves | Result |
|---|---|---|---|---|
| No change in Fed rates after the July 2026 meeting ($24.8M volume) | 75% no change | HOLD, 4 of 4 models | July 29 | Pending |
| Strait of Hormuz traffic back to normal by July 31? | 1% yes | NO (4 of 4, unanimous) | July 31 | pending |
Market one: the July Fed meeting
When we asked, Polymarket had "no change" at 75%. All four models said HOLD, unanimously, and gave essentially the same reason: inflation is still above target, so there is no case to move. This week the AIs agree with the money. The interesting weeks will be the ones where they split with each other, or take the other side of the market entirely.
How we run it
Every model gets a fresh session with no memory and the same question. Each one must commit to a one-word call plus a single sentence of reasoning. We post the calls on X before resolution, then score them after the market settles against the official outcome. Nothing gets edited after the fact.
Win rate so far
There is no win rate yet. Nothing has resolved. The first market settles on July 29, and the first real scores go up then. We are not going to pretend a streak exists before a single call has been graded.
This page updates as markets resolve.