About Best Prediction Market Tools

Best Prediction Market Tools is a directory of 53 prediction market tools for Polymarket and Kalshi traders, with one page per tool and a category hub for each job.

The team behind Kairos (kairos.trade), a cross-venue trading terminal, builds and runs this site. We say so on every page. Kairos takes the terminal slot in each list because cross-venue aggregation is the one job a single-venue tool cannot do. Every other tool is presented on its own merits.

How a page gets written

Each tool page is built from the tool's own site, documentation or repository, read on the date shown at the top of the page. Prices are quoted as displayed on the live pricing page. Venue coverage is what the tool itself claims. GitHub stars and last-push dates come from the GitHub API. A fact we could not confirm on a primary source is left out rather than guessed.

Pages carry a last-checked date and are re-read when the site is rebuilt. If a tool has changed its pricing or shut down, the live site wins and this page is behind.

What this site is not

Nothing here is financial, legal or tax advice. Event contracts and prediction markets carry real market risk, and a tool that finds an edge does not remove it. Read each venue's rules before you trade.

The network

Best Prediction Market Tools is one of three guides: best prediction market APIs and best prediction market Bots cover the other two jobs.

Contact

Corrections and additions: open an issue with the URL of the tool and what changed, or write to the Kairos team through kairos.trade.