Comparison
OddsRelay vs OddsPapi
OddsPapi is a breadth-first aggregator, and its self-serve experience is genuinely good: public docs with no login wall, calculator pricing with a free tier, WebSocket streaming alongside REST, and one of the widest published bookmaker catalogues in the lane. The honest difference is what arrives in the payload. It delivers raw odds you process yourself; OddsRelay's odds data API delivers UK prices already matched against exchange lay odds and rated, with bet365 included as standard. Which one fits depends on which half of that work you want to own.Powers a leading UK matched-betting platform.
Matched · rated
IllustrativeArsenal v Chelsea · Match Odds
Football · Arsenal
- Back · bet365
- 2.10
- Lay · Exchange
- 2.12
- Rating
- 98.1%
Paired, rated, liquidity-gated — qualifying loss and profit already computed. You render the row.
What OddsPapi does well
- A wide stated catalogue: its homepage states 300+ bookmakers (its pages elsewhere state up to 370), across 60+ sports and 12,000+ yearly competitions — including sharps, US books and exchanges.
- bet365 is listed as covered, named on the homepage among featured sportsbooks and grouped under 'UK & Europe' on its coverage post, alongside William Hill, Ladbrokes, Unibet and 888sport.
- Betfair Exchange and Matchbook are listed with raw back and lay odds — exchange coverage exists, even though it arrives unpaired.
- A documented WebSocket streaming option in addition to REST polling, with historical odds stated as included at no extra cost.
- Genuinely self-serve: public documentation, a build-your-own pricing calculator, and a free tier with no credit card stated.
- Prolific, developer-friendly docs and content — a low-friction evaluation experience from first visit to first request.
Side by side
| Dimension | OddsPapi | OddsRelay |
|---|---|---|
| Core output | Raw odds per bookmaker and market — pre-match, live and historical; the public docs list no matched/paired output, rating or qualifying-loss fields. | Back prices arrive already paired to a live exchange lay price, rated, with the qualifying loss computed — oddsmatcher-ready. |
| bet365 | Listed as covered: named on the homepage among featured sportsbooks and grouped under 'UK & Europe' on its coverage post — delivered as raw prices. | Included as standard across all seven feed types, arriving already matched — see the bet365 spoke. |
| UK bookmaker depth | Lists major UK/European names — bet365, William Hill, Ladbrokes, Unibet, 888sport — inside a catalogue its own pages state at 300+ (homepage) to 370 (blog posts). | 60+ UK books including the domestic names big catalogues skip, normalised into one schema — live on the coverage dashboard. |
| Exchange lay prices | Lists Betfair Exchange and Matchbook with raw back and lay odds — pairing them to bookmaker back prices is your build. | Three exchanges (Betfair, Smarkets, Matchbook), with lay prices pre-paired to every bookmaker back price and rated. |
| Regions | Does not document a region-filter parameter in its public API docs — selection is per individual bookmaker; the published coverage lists no South African or Nigerian domestic books. | A region-scoped feed, deep UK today; South African and Nigerian domestic books are on the roadmap — stated as roadmap, not shipped. |
| Pricing posture | Published self-serve: an interactive build-your-own pricing calculator plus a free tier with no credit card stated. | Scoped per client: a free trial key first, then a plain conversation — no request-quota arithmetic. |
| Docs and evaluation | Public documentation with no login, covering roughly 20 REST endpoints plus a documented WebSocket API; self-serve sign-up. | Public docs and a live coverage dashboard, so the feed is checkable before a single conversation. |
Where OddsPapi is the right pick
For a breadth-first build, OddsPapi is a strong choice, and this page won't pretend otherwise. Its homepage states 60+ sports, 12,000+ yearly competitions and a 300+ bookmaker catalogue including sharps, US books and exchanges; the docs are public with no login; there's a free tier with no credit card stated; and it offers WebSocket streaming alongside REST, with historical odds included at no extra cost. If you're building an odds-comparison tool or a betting model and want maximum raw surface area, you can be evaluating it this afternoon.
The comparison becomes interesting when your product is a UK matched-betting or arbitrage tool. Then the deciding question stops being "how many books?" and becomes "who does the matching?" — a different product decision, set out plainly in the API docs and the rows above.
The gap that decides it: matched output
Everything an oddsmatcher or arb scanner does starts from a bookmaker back price set against the exchange lay price for the same selection. OddsPapi delivers both halves raw: its docs cover sports, fixtures, markets, odds and historical endpoints, and its coverage post lists Betfair Exchange and Matchbook with back and lay prices — but no matched or paired output, no rating and no qualifying-loss fields are documented. Its coverage post mentions matched betting as a use case; the pairing, rating and maths remain yours to build and keep running. In OddsRelay's feed the pairing is already done: each row arrives rated, with liquidity attached, as detailed on the matched-betting spoke and the exchange-lay page.
The second decider is scope. OddsPapi's public docs document no region-filter parameter — bookmaker selection is per individual bookmaker — and its published coverage lists no South African or Nigerian domestic books. On the headline count, its own pages state figures from 300+ on the homepage to 370 in blog posts; we don't arbitrate that. The counter isn't a bigger number: it's 60+ UK bookmakers, including the domestic names wide catalogues skip, each verifiable on the live coverage dashboard, with South Africa and Nigeria stated plainly as roadmap.
Test the difference in an afternoon
Both products let you verify before you commit, which is how it should be. Their free tier and public docs show you raw breadth quickly; a free trial key here puts the matched UK feed — bet365 included, on a ~3s pre-match polling cycle — into your own product, and the coverage dashboard shows freshness and uptime before you sign up. If you're also weighing the developer default, see vs The Odds API; every rival is compared on the comparison hub.
Pick OddsPapi if
- You want one of the widest published raw catalogues in the lane — sharps, US books and raw exchange prices included — and you're happy to do the processing.
- You need WebSocket streaming, or historical odds included at no extra cost for backtesting.
- You want to start today, self-serve: public docs, calculator pricing and a free tier with no credit card stated.
- You're building an odds-comparison tool or betting model across many sports where raw prices are enough.
Pick OddsRelay if
- Your product is a UK oddsmatcher, arb scanner or matched-betting tool and you want paired, rated rows — not raw prices to process.
- bet365 matters as a matched output, not just a listed name — included as standard here, already paired to exchange lay.
- You'd rather have UK depth you can verify on a live dashboard than a headline catalogue count.
- You want a region-scoped feed — deep UK today, South Africa and Nigeria as honest roadmap — rather than per-bookmaker selection.
Questions
Does OddsPapi include bet365?
Yes — as of 2 July 2026, bet365 is named on OddsPapi's homepage among its featured sportsbooks and grouped under 'UK & Europe' on its coverage post, delivered as raw odds. The difference is processing: OddsRelay includes bet365 as standard, with each price already matched against an exchange lay price and rated.
Can I build a matched-betting product on OddsPapi?
You can, and its coverage post mentions matched betting as a use case — but the matching layer is yours to build. Its public docs list raw odds endpoints and raw exchange back/lay prices, with no paired output, rating or qualifying-loss fields documented. OddsRelay delivers that processing done: each row arrives paired and rated.
How many bookmakers does OddsPapi cover?
Its own pages state varying figures — 300+ in the homepage body, 350+ in the homepage title and blog, and 370 in blog posts (one shows its bookmakers endpoint returning that count; another states it as verified live in May 2026). The figure is not independently pinned down, and the comparison doesn't turn on it: it turns on output shape. OddsRelay's own figure — 60+ UK bookmakers — is verifiable on the live coverage dashboard.
Where do these competitor facts come from?
Every claim about OddsPapi on this page is taken from its own public pages — the homepage, its API documentation and pricing page, and its coverage and comparison blog posts — each linked in the sources block with the date we last checked it. If something has changed since, their pages win.
Keep comparing
The odds API pillar
The full product: coverage, feed types, processing and delivery.
Matched-betting data
What the processing layer replaces in your build.
Exchange lay coverage
Three exchanges, pre-paired to every back price.
The comparison hub
Every provider comparison, one honest index.
vs The Odds API
The self-serve developer default vs matched output.
Build vs buy
The honest arithmetic of owning the pipeline.
Compare for yourself
A free trial key puts the matched UK feed — bet365 included — into your own product; the live coverage dashboard shows freshness and uptime before you commit.