Comparison
OddsRelay vs OddsPapi
Breadth is OddsPapi's whole pitch, and the pitch checks out: public docs, calculator pricing with a free tier, and one of the widest published bookmaker catalogues in the lane. Every price it sends is raw, though. OddsRelay's odds data API does the pairing and rating before delivery, so UK prices arrive matched.
Matched · rated
Arsenal v Chelsea · Match Odds
Football · Arsenal
- Back · Bet365
- 2.10
- Lay · Exchange
- 2.05
- Rating
- 102.4%
Paired and liquidity-gated, with the lay price and liquidity carried. The rating here is one line of client-side maths at your own commission rate (at 0: 100 × back ÷ lay). You render the row.
What OddsPapi does well
- A wide stated catalogue: its homepage states 300+ bookmakers across 60+ sports and 12,000+ yearly competitions, including sharps, US books and exchanges.
- A documented WebSocket streaming option in addition to REST polling, with historical odds stated as included at no extra cost.
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 or rating fields. | Back prices arrive already paired to a live exchange lay price, rated. 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. | Covered across all six feed types, arriving already matched. |
| 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). | 140+ bookmakers across a 20-country network (UK and Irish books plus the African, Australasian and North American domestic names wide catalogues skip), normalised into one schema and 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. | Four exchanges (Betfair, Smarkets, Matchbook and BETDAQ), 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 across a 20-country network (the UK, Ireland, South Africa, Nigeria, Kenya, Ghana, Tanzania, Uganda, Zambia, Cameroon, Côte d'Ivoire, Senegal, DR Congo, Mozambique, Malawi, Australia, Canada, the US, Rwanda and New Zealand), filtered from one endpoint. |
| Sports & events discovery | Documents GET /sports and GET /fixtures (plus GET /fixture) for discovery. A clean self-serve layer. | GET /v2/sports and GET /v2/events, the latter carrying a has_coverage flag showing which feed types each event supports. |
| 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 earns its place
For a breadth-first build, OddsPapi is a strong choice, and you can be evaluating it this afternoon, self-serve. It also mentions matched betting as a use case, but its public docs document no paired output and no rating fields, so the pairing and maths remain yours to build.
For a UK matched-betting or arbitrage tool the calculus changes. A wide catalogue with nobody doing the matching still leaves the pairing to you, and the rows above show what arrives finished instead, in the shape on the matched feed page.
Pick OddsPapi if
- You want one of the widest published raw catalogues in the lane 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.
- You're building an odds-comparison tool or betting model across many sports where raw prices are enough.
Pick OddsRelay if
- You want paired, rated rows out of the box.
- Bet365 matters to you as a matched output rather than a listed name.
- You'd rather have UK depth you can verify on a live dashboard than a headline catalogue count.
- You want a region-scoped feed (one region parameter across a 20-country network) rather than per-bookmaker selection.
Questions
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, 140+ bookmakers across a 20-country network, is published on the live coverage dashboard.
Keep comparing
The matched feed
What the processing layer replaces in your build.
Lay & exchange coverage, explained
Four exchanges, pre-paired to every back price.
The comparison hub
Every rival comparison in one place.
vs The Odds API
The self-serve developer default vs matched output.
The raw feed
Build on normalised prices, or let the matched feed do the pairing.
Test both feeds
A free trial key puts the matched UK feed into your own product. The live coverage dashboard shows update times and uptime before you commit.