Headline Odds

See real-time Kalshi prediction market odds directly next to news headlines as you browse.

Headline Odds adds real-time prediction market probabilities directly next to news headlines as you browse — powered by Kalshi, the federally regulated U.S. prediction market. HOW IT WORKS As you read the news, Headline Odds silently scans the headlines on your page and matches them against thousands of active Kalshi markets using an AI-powered semantic matching engine. When a relevant market is found, a small green probability pill appears next to the headline — showing you the current market-implied probability in real time. Click any pill to see the full market card: the yes and no prices, trading volume, and closing date. Everything happens inline on the page. No new tabs. No searching. No context switching. When a headline sounds confident ("set to win", "confirms", "approved") but the market price is low, a lightning bolt badge flags the divergence so you can see where the crowd disagrees with the narrative. WHY IT MATTERS Prediction markets aggregate the beliefs of thousands of real-money participants into a single probability estimate. Research consistently shows that liquid prediction markets outperform expert consensus forecasts on political, economic, and financial events. Headline Odds makes that signal visible while you read, turning passive news consumption into a calibrated, probability-aware experience. FEATURES • Real-time odds from Kalshi's federally regulated prediction market • AI-powered headline matching — finds relevant markets even when vocabulary doesn't overlap • Market Disagrees detector — flags when odds contradict confident headlines • One-click share to X with pre-formatted odds • Inline market cards — yes/no prices, multipliers, trading volume, and close date at a glance • Draggable cards with multi-market navigation (arrow keys supported) • Automatic market refresh every 5 minutes • Keyboard accessible — Tab, Enter, Escape, and arrow key navigation • Zero tracking — no account required, no browsing data collected or stored • Works on most major news sites PRIVACY Headline Odds does not collect, store, or transmit any personal data or browsing history. Market data is fetched from Kalshi's public API. Headline text is sent to a Cloudflare Workers AI endpoint for semantic matching — no data is logged or stored by this service. The extension requires no login and creates no user profile. Full privacy policy at headlineodds.fun/privacy.html ABOUT KALSHI Kalshi is a federally regulated event contracts exchange designated by the Commodity Futures Trading Commission (CFTC). Headline Odds is an independent extension and is not affiliated with Kalshi, Inc.