If you've shopped for a real-time sports odds feed and OpticOdds came up: here's the honest comparison. Both aggregate live lines from major sportsbooks. The differences are in pricing, signup friction, prediction-market coverage, and how AI tools talk to the API.
Both ParlayAPI and OpticOdds aggregate 20+ sportsbooks with live odds, arbitrage, and player props. ParlayAPI starts at $0 (free tier) or $19/month for the Starter tier. OpticOdds requires a sales call and quotes start in the low thousands per month based on real customer testimonials. ParlayAPI also includes Kalshi + Polymarket prediction-market arbitrage, an MCP server for Claude/Cursor agent integration, and a 1.15M-row historical archive for backtesting on every tier including free. Sign up free →
Pricing, coverage, and developer experience as of 2026.
| Feature | ParlayAPI | OpticOdds |
|---|---|---|
| Free tier | Yes (1,000 req/mo, no credit card) | No |
| Self-serve signup | Yes (60 seconds) | No (sales call required) |
| Public pricing page | Yes (/pricing) | No (quote-based) |
| Entry tier | $19/month Starter | Sales-quoted (typically $1,000+) |
| Sportsbooks covered | 21+ | ~30 |
| DFS apps (PrizePicks, Underdog, etc.) | Yes (5) | Yes |
| Prediction markets (Kalshi, Polymarket) | Yes | No |
| Exchanges (Novig, ProphetX) | Yes | Yes |
| Arbitrage pre-computed | Yes | Yes |
| +EV pre-computed | Yes | Yes |
| WebSocket streaming | Pro tier ($99/mo) | Higher tier |
| MCP server (Claude, Cursor, Devin) | Yes (first odds API to ship one) | No |
| llms.txt / agents.json (LLM agent discovery) | Yes | No |
| Public OpenAPI spec (no auth) | Yes | Sales-gated |
| Historical archive | 1.15M+ rows back to 2005, free tier | Pro+ addon |
| Drop-in compatibility with the-odds-api.com | Yes (/v4 alias) | No |
| Public no-auth try-it endpoint | Yes (/v1/try/{sport}/odds) | No |
| Affiliate program | 25% recurring | Unknown |
OpticOdds gates everything behind a Calendly booking. ParlayAPI is sign-up-and-build. Most indie devs and small teams don't have the time (or budget tolerance) for a 30-minute sales call to evaluate.
Plug ParlayAPI's MCP server into Claude, Cursor, Continue, or any other agent and your AI can directly query odds. As LLM-coding takes over, the first API in this space to expose itself to agents has a real durable advantage.
Prediction-market vs sportsbook arbitrage is one of the most underexploited edge sources in 2026. We expose Kalshi and Polymarket prices in the same schema as books for one-query cross-reference. OpticOdds doesn't carry these.
1.15M+ rows in the historical archive going back to 2005, multi-source cross-verified. Available to free-tier users from day one. See full coverage →
If your code already targets the-odds-api's /v4/ URL pattern, change the host. Our /v4/* endpoints alias to /v1/* with the same JSON shape. Zero refactor.
We publish our actual live throughput and uptime at /live-stats. No "trust us" required: you can see request counts, source health, and freshness in real time.
| Tier | ParlayAPI | OpticOdds (typical) |
|---|---|---|
| Free | 1,000 req/month | N/A |
| Hobbyist / Starter | $19/mo · 100K req | N/A |
| Pro | $99/mo · 1M req · WebSocket | Sales-quoted ($1,000+/mo typical) |
| Business | $499/mo · 10M req | Sales-quoted |
| Enterprise | $2,499/mo · 100M req · SLA | Custom |
// Live MLB moneylines from 21+ books with one fetch
const r = await fetch(
"https://parlay-api.com/v1/sports/baseball_mlb/odds?regions=us",
{ headers: { "X-API-Key": "YOUR_KEY" } }
);
const events = await r.json();
// Live arbitrage: pre-computed, just hit the endpoint
const arbs = await fetch(
"https://parlay-api.com/v1/sports/baseball_mlb/arbitrage?min_profit=0.005",
{ headers: { "X-API-Key": "YOUR_KEY" } }
);
// Prediction-market vs sportsbook arb (OpticOdds doesn't have this)
const km = await fetch(
"https://parlay-api.com/v1/prediction-markets/baseball_mlb",
{ headers: { "X-API-Key": "YOUR_KEY" } }
);
We're not pretending to be the right pick for everyone: