Forecasting intelligence
The odds on everything.
Every important question about the future — elections, the economy, AI, crypto, science — answered as a live probability the market actually believes. Sourced from real prediction markets, tracked over time, and ready for your models and agents.
$9.3B
Market volume tracked
480
Live questions
10
Topics covered
$130.5M
Traded in last 24h
Every probability is a real market price sourced live from Polymarket — nothing modelled, nothing fabricated. Snapshot updated Jul 5, 2026.
Trending now
What the world is watching
The most actively traded questions right now — the future, priced in real time.
World Cup Winner
Brazil vs. Norway - More Markets
Brazil vs. Norway - Exact Score
Mexico vs. England - More Markets
Brazil vs. Norway
Next leader out of power before 2027? (No Orban)
Mexico vs. England
Wimbledon ATP: Felix Auger-Aliassime vs Alejandro Davidovich Fokina
How it works
A probability, not a hot take
Markets do the forecasting
Thousands of people stake real money on what happens next. That collective bet becomes a single, calibrated probability — far harder to fool than a pundit or a poll.
WillThisHappen organises & tracks it
We pull those live prices, sort them into clean topics, phrase them as plain questions, and track how the odds move — so you can read the future at a glance.
You (or your agents) act on it
Watch what matters, get alerted when the odds move, export the history, or pull any probability straight into your model, newsroom or autonomous agent via the API.
Browse by topic
Pick your corner of the future
Biggest movers
Where minds are changing
Built for humans and machines
The probability of anything, as an API
When a person — or an AI agent — asks “what are the odds of X?”, the answer should be one clean, sourced number. WillThisHappen serves every tracked question over a simple JSON API and publishes an llms.txt so models can find and cite it.
# Ask the market anything
GET https://willthishappen.com/api/v1/questions/world-cup-winner
{
"question": "World Cup Winner",
"probability": 0.346,
"verdict": "Leaning no",
"topic": "sports",
"volume_usd": 3914670756,
"source": "polymarket",
"as_of": "2026-07-05T19:18:23.193Z"
}Why WillThisHappen
Read the future like a professional
One number, not a wall of noise
Skip the punditry. See the calibrated probability and how it's moved.
Alerts when the odds move
Get notified the moment a question you follow swings — before the headlines catch up.
Agent-ready by design
A clean API and llms.txt mean your models can read the same future you do.
FAQ
Good questions
Where do the probabilities come from?＋
Every probability is the market-implied price from a live prediction market — currently Polymarket — where thousands of people put real money behind their forecasts. WillThisHappen aggregates, organises and tracks those prices; it doesn't set them.
Is WillThisHappen a betting site?＋
No. WillThisHappen is a research and intelligence tool. You can't place a wager here. We surface what the market believes so you can read it, track it, and pull it into your own work.
How accurate are prediction markets?＋
Prediction markets are among the best-calibrated forecasts available for many questions, because being wrong costs money. They're not oracles — a 70% chance still means it fails 3 times in 10 — but as a real-time gauge of collective expectation they're hard to beat.
Can AI agents use WillThisHappen?＋
Yes — that's a first-class use case. WillThisHappen exposes a clean forecasting API and an llms.txt so language models and autonomous agents can pull the market-implied probability of any tracked question directly.
Start following the future.
Browse every probability free. Create an account to build a watchlist and get a weekly digest. Upgrade any time for alerts and API access.