Odds API Coverage Report: November 2026

The Coverage Map tracks 45 odds APIs and 135 active books. A "book" here means a sportsbook, a betting exchange, a prediction market or a daily fantasy (DFS) app. Each count in this report uses one of two levels of proof:

• Listed: the API names the book in its documentation, or returned it to our probe. For 35 APIs, the source is the provider's docs, checked on 28 October 2026.
• Verified: our own probe, run with our own API key, returned odds from that book. We probe 10 APIs every 3 days. This report uses the probe of 1 November 2026.

Read the numbers with three limits in mind:

• A probe shows what one plan returned on one day. A higher plan can carry more books.
• If a provider's docs do not name a book, we count it as "not listed", not as "no". Some docs are incomplete.
• Some APIs on the list carry one book by design, such as a feed for one sharp book or for one operator's own odds. They lower the averages, which is why we also give counts for the 27 APIs that cover 3 or more books.

We will not change the numbers on this page, so a quote from it stays true. For today's numbers, use the Coverage Map.

DraftKings leads the US books, and FanDuel and BetMGM follow close behind. Caesars, Fanatics and Hard Rock Bet trail by 7 APIs. If your users are in a Hard Rock state such as Florida, that gap matters.

All 8 books on one API is the hard part. 25 APIs list at least one of them, but only 6 list all 8. If you build a line shopping tool for US bettors, start with those 6 and test your exact leagues and markets in the Coverage Map.

Kalshi ties DraftKings as the most listed book. Novig, a US sports exchange, is on 18 APIs, two more than Caesars. Our probes returned Polymarket International from 4 APIs, which is every API that lists it.

Exchange prices matter for models because they carry less built-in margin than sportsbook lines. If you devig sportsbook lines against an exchange, check that one API carries both sides. If you compare two feeds with different timestamps, you add error that is easy to miss.

Offshore books are as easy to find as the US majors. Bovada matches FanDuel at 20 APIs, and BetOnline sits at 18. The sharp books are close behind.

Pinnacle is the usual reference line for sharp bettors. 14 of the 18 APIs that list Pinnacle also list at least one big US book, so you can compare a sharp price with a retail price in one call. The other 4 carry Pinnacle without a big US book. They are useful when you only need the sharp line.

The 135 books spread out like this:

The broadest API lists 89 of the 135 books. The narrowest carry one. In our probes, the API with the most books did not return the most markets. One API with about a fifth as many books returned twice as many. If your product lives on player props, a deep API with fewer books can beat a wide one.

For the 12 books that 2 or fewer APIs list, you have little choice. Find them in the Coverage Map before you design around them.

1. Write down the books, leagues and markets that your product cannot ship without.
2. Select them in the Coverage Map. It ranks every API by how much of your list it matches, and it shows the source and date of each match.
3. Prefer a "Verified" match over a "From docs" match when the two are close.
4. Read the sportsbook page for your most important book, such as FanDuel or DraftKings, then the full review of each API on your shortlist.
5. Test with a free tier or trial before you pay. The free odds API guide lists the options.

The full table of all 135 books is free to download: coverage-report-2026-11.csv. Each row gives the book, its type, its group and the two counts from this report.

You can use the data under the CC BY 4.0 license. Credit "SportsAPIs.dev Odds API Coverage Report, November 2026" with a link to this page.