Same v4 endpoints, same response shapes, same query parameters. 45+ sources, with real American odds on every line. Polymarket and Kalshi integrated as prediction-market signals. WebSocket streaming on Business+. Sub-5-second freshness on the major books. Migrate in one config change.
Apples-to-apples. ParlayAPI numbers are measured from our live API (as of 2026-08). the-odds-api numbers are quoted from the-odds-api.com's own pricing page, read 2026-08-09. Checkmarks are features either product offers.
| Feature | ParlayAPI | the-odds-api |
|---|---|---|
| Distinct sources (24h) | 45 sources (books + sharp signals), incl. DraftKings, FanDuel, Pinnacle, bet365, Caesars, BetMGM, BetRivers, Bovada, Fliff, Novig | 40+ bookmakers (per their site) |
| DFS pick'em | PrizePicks, Underdog, Sleeper, Betr, ParlayPlay, Pick6 (standard / demon / goblin odds types surfaced) | Sportsbook-focused; DFS pick'em not a first-class product |
| Prediction markets | ✓ Polymarket + Kalshi as sharp signals | × Not advertised |
| Player prop coverage | 43 sources writing player props across 4,000+ distinct prop markets, paired O/U on TOA-canonical keys | Player props available; fewer sources per market |
| Live scores | ✓ /v4/sports/{sport}/scores | ✓ |
| Historical odds | 1.7M+ closing game lines back to 2005; 30M+ prop closing lines since 2022 | ✓ Included on all paid tiers |
| WebSocket streaming | ✓ /ws/odds/{sport}?apiKey= on Business+ | × Not advertised |
| Freshness / cadence | Sub-5-second freshness on major books; live push over WebSocket, REST polling otherwise | REST polling; no streaming advertised |
| API shape | Mirrors the-odds-api's v4 REST shape: same paths, same JSON, same query params | Original |
| Endpoint paths | /v4/sports/{sport}/odds (and /v1 alias) | /v4/sports/{sport}/odds |
| Free tier | 1,000 credits/month, no credit card required | 500 credits/month |
| Paid pricing | Lower at every comparable tier, see /pricing for current prices | $30 (20K) / $59 (100K) / $119 (5M) / $249 (15M) |
the-odds-api is older, simpler, and more battle-tested, with a much larger base of tutorials, Stack Overflow answers, and community code you can copy from day one. It now covers 40+ bookmakers of its own, and it includes historical odds on every paid tier. If you want the most-documented option and don't need WebSocket streaming, prediction-market signals, or DFS pick'em, it is a solid, proven choice.
ParlayAPI prices and credit quotas can change, so we link to the live /pricing page rather than freeze a number here. the-odds-api's tiers below are quoted from their own pricing page, read 2026-08-09.
Paid tiers scale up from there, with WebSocket streaming from Business up. We come in lower than the-odds-api at every comparable credit tier; check your usage against the current ladder:
See live pricing →Source: the-odds-api.com, read 2026-08-09. No higher tier advertised.
ParlayAPI mirrors the-odds-api's REST shape. Switch the base URL, you're done. Same paths, same response JSON, same query parameters.
# before curl "https://api.the-odds-api.com/v4/sports/basketball_nba/odds?regions=us&markets=h2h&apiKey=YOUR_TOA_KEY" # after curl "https://parlay-api.com/v4/sports/basketball_nba/odds?regions=us&markets=h2h&apiKey=YOUR_PARLAY_KEY"
# before url = "https://api.the-odds-api.com/v4/sports/basketball_nba/odds" # after url = "https://parlay-api.com/v4/sports/basketball_nba/odds"
pip install parlay-api from parlay_api import ParlayAPI client = ParlayAPI(api_key="YOUR_KEY") events = client.odds("basketball_nba", regions="us", markets="h2h,spreads,totals") # Plus our extensions props = client.props("baseball_mlb", markets=["player_strikeouts"]) fair_o, fair_u = ParlayAPI.devig(over_price=-110, under_price=-110)
SDK on GitHub: JacobiusMakes/parlay-api-python (MIT-licensed, ships with example +EV scanner, arbitrage finder, and WebSocket stream tools).
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