What is The Odds API?

Supported data includes moneyline, spreads, totals, selected futures, player props and alternate lines. Decimal or American odds are available alongside teams, start times, bookmaker-update timestamps and supported scores or results. Coverage and refresh intervals vary by sport, book and market.

Use REST for an application or Excel and Google Sheets add-ons for a spreadsheet workflow. Eligible plans offer past snapshots, whose availability differs from free current-odds access. A useful comparison still needs the same event and settlement definition, an explicit bookmaker-margin adjustment and a snapshot available before the historical decision time.

Who it is for

For developers building sports-price comparisons and researchers studying historical bookmaker lines.
For spreadsheet users maintaining a sports dashboard without writing their own API client.

Features and coverage

Bookmaker and market selection
Choose supported regional books and moneyline, spread, total, selected futures, prop or alternate-line markets; request decimal or American odds.
Metadata, scores and history
Read teams, starts and bookmaker-update times, retrieve supported results and query available historical snapshots on eligible plans.
API or spreadsheet access
Integrate REST data in code or use the offered Excel and Google Sheets add-ons.

Workflows with The Odds API

Construct a reference probability

Match the event and settlement terms, retrieve both sides and remove bookmaker margin with a specified method before comparing a prediction contract.

Avoid a later snapshot

For a historical entry, use an available snapshot from before the entry time and inspect its bookmaker timestamps.

Budget polling credits

Estimate consumption across chosen markets and regions, then monitor remaining usage and the actual refresh cadence.

Pricing and total cost

Starter provides 500 monthly credits for free. The documented paid tiers increase quota; endpoint coverage and historical eligibility still need to match the selected plan.

Starter

Free

500 credits/month
Sports, bookmakers and markets depend on the selected endpoints

20K

$30/month

20,000 credits/month
Sports, bookmakers and markets depend on the selected endpoints

100K

$59/month

100,000 credits/month
Sports, bookmakers and markets depend on the selected endpoints

5M

$119/month

5,000,000 credits/month
Sports, bookmakers and markets depend on the selected endpoints

15M

$249/month

15,000,000 credits/month
Sports, bookmakers and markets depend on the selected endpoints

Getting started

Before you start: Coverage and refresh intervals vary by sport, bookmaker and market. Historical access differs from the free current-odds offering.

Choose API or spreadsheet access and request an API key.
Set sport, region and market type, then inspect outcome definitions and update timestamps.
Estimate credit costs and monitor quota and refresh cadence before broad polling.

A bookmaker quote is an external reference, not a Polymarket fill.

Useful links

What to check

Coverage and refresh intervals vary by sport, bookmaker and market. Historical access differs from the free current-odds offering.
Credit costs depend on the requested data; one HTTP call is not always one credit. The service supplies data rather than executing bets.

A closer look

Ratings & reviews

Editorial rating

4.0/ 5

0 user reviews

PredictionToolkit editorial

Our take on The Odds API

Defined bookmaker coverage, timestamps and historical endpoints make this a useful external sports-price reference. Integration still needs checks for quota consumption, varying refresh intervals and quotes that are not executable prediction-market orders.

Based on documented features, setup and access terms. How we rate