Skip to content
Sports API

Odds data

How do live odds APIs work?

Live odds APIs supply changing market information while sporting events are taking place. The word live can be misleading if it is interpreted as instantaneous or guaranteed executable pricing. A trustworthy implementation explains freshness, follows market status and handles interruptions without presenting an old quote as a current opportunity.

Updated

Published · Updated · Sources checked

Bookmaker changes pass through a feed and application before appearing on a website
In-play describes the event period; it does not remove delays between the bookmaker and reader.

Short answer

A live odds service collects or receives market changes and makes them available through polling endpoints or streaming delivery. Your application maps the event and market, checks timestamps and status, and updates its display. Source collection, provider processing, network travel and application caching can all introduce delay.

Trace the complete journey of a price

A bookmaker's displayed price, the provider's observation and your application's receipt are different moments. A fast server response measures only part of that journey. Record whichever source and market timestamps are actually supplied, then explain what your own timestamp means. Avoid calling a feed the fastest unless a suitable independent comparison supports that specific product and measurement.

Sources: [2] The Odds API: Published update intervals

Check the provider schedule for each market

The Odds API publishes separate update intervals by market type and event phase. Its documented featured-market schedule differs between prematch and in-play, and other categories follow different intervals. Those published collection intervals are not universal end-to-end latency guarantees. Our refresh-frequency guide explains how to choose polling without assuming every extra request produces a new price.

Sources: [2] The Odds API: Published update intervals

Respect suspended and missing markets

During play, a market can be suspended, removed or temporarily unavailable. The precise signals depend on the feed. Treat those states explicitly and do not silently reuse a previous quote as though it remained available. Keep event and bookmaker identifiers attached to every price. A blank selection and a valid price are different states that your interface should distinguish.

Sources: [1] The Odds API: API v4 documentation and quota costs

Choose polling or streaming deliberately

REST polling asks for updates at intervals. A WebSocket can deliver messages over an open connection, but your code must still manage disconnects, ordering and recovery. Neither approach fixes upstream delays or guarantees every market is covered. Read REST versus WebSocket delivery and confirm which method the actual product supports before designing around a persistent connection.

Sources: [4] MDN: WebSocket API

Evaluate practical coverage and quotas

Test the bookmakers and markets that matter during representative live events. Check how frequently responses change, whether timestamps are consistent and how reconnects affect usage. A large global catalogue does not guarantee live coverage for your target competition. Use the bookmaker coverage checklist alongside the odds provider comparison when creating a shortlist.

Sources: [1] The Odds API: API v4 documentation and quota costs

Display information without promising execution

An informational odds page is not a reservation of a bookmaker's price. Availability can change between viewing a quote and visiting an operator. The Odds API's terms warn about volatility, errors and delays and require independent verification before acting. Label data appropriately, avoid guaranteed-profit claims and keep a clear stale-data state for interrupted updates.

A useful acceptance test follows one market across normal updates, a suspension and the end of an event. Record how the provider signals each transition and what the reader sees. Test a delayed message and a disconnected session as well. If the application cannot determine whether a quote remains available, the safer presentation is an explicit unavailable state rather than a guess. Keep this behaviour consistent across mobile displays and any cached pages using the same data. Include screenshots for reference.

Sources: [3] The Odds API: Terms and conditions

Frequently asked questions

Does live mean zero delay?

No. Collection, processing, transmission and display each take time. A product's documented intervals describe only the measurements it explicitly defines.

Will requesting every second make prices fresher?

Not if the upstream source updates less often. It can simply consume allowance faster and increase the chance of rate limiting.

What should happen when a market disappears?

Follow the supplier's state model. Remove or clearly mark unavailable selections rather than presenting cached odds as a currently offered price.

Can a live feed guarantee a betting profit?

No. Data delivery does not establish prediction quality or executable prices. Market conditions and outcomes remain uncertain.

Sources

Checked . Documentation and terms change, so confirm details with the provider before you build.

  1. The Odds API: API v4 documentation and quota costshttps://the-odds-api.com/liveapi/guides/v4/
  2. The Odds API: Published update intervalshttps://the-odds-api.com/sports-odds-data/update-intervals.html
  3. The Odds API: Terms and conditionshttps://the-odds-api.com/terms-and-conditions.html
  4. MDN: WebSocket APIhttps://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API

Related guides