ArbBets: what it does, what it costs, where it stops

What it does

The core product is a cross-market arbitrage scanner with alerts. Around it sit a funding-rate arbitrage tool for perps, a positive-EV finder, a weather edge finder, a sharp-money scanner, sports arbitrage alerts and an odds-comparison page.

The homepage cites its own 2026 data: roughly 9.6% average arb rate across six Kalshi-Polymarket scans and a typical ROI of 1 to 8% per trade after Kalshi fees. Treat both as the vendor's numbers.

• 990+ matched pairs across politics, macro and crypto (vendor claim)
• 100+ arbitrage opportunities detected daily (vendor claim)
• Funding-rate arbitrage and +EV finder
• REST API with fee-adjusted ROI endpoints on Premium

Pricing

Basic is $59 per month, $39 per week or $490 per year, and covers sports arbitrage alerts, guides and email support. It does not include the prediction-market scanner.

Pro is $149 per month, $69 per week or $990 per year. It adds cross-market arbitrage, funding-rate arbitrage, coverage of Polymarket, Kalshi, Opinion and Novig, the +EV finder, the weather edge finder and the sharp-money scanner.

Premium is $299 per month, $119 per week or $2,990 per year. It adds full REST API access with 5,000 monthly credits and early access to new features. The pricing page states there is no free trial, and that annual billing saves roughly 20 to 30% versus monthly.

Venues and data

The homepage names Polymarket, Kalshi and Opinion. The Pro tier description adds Novig. The API docs list endpoints named kalshi-polymarket-full, opinion-polymarket-full, arbs-orderbook and arbs-full, authenticated with a bearer token.

Refresh rate is not published on the pages checked. The site's footer disclaimer states it is 100% for informational purposes and does not involve real-money betting.

Where it falls short

The entry price for the prediction-market scanner is $149 per month, not the $59 headline. The $59 tier is sportsbooks only.

The 100+ daily opportunities and 9.6% average arb figures are self-reported and not fee-audited by a third party on the pages checked. Spreads that show before fees, slippage and fill risk are the upper bound, not the expected result.

Who should use it

Full-time or semi-professional arb traders who can clear $149 to $299 per month in captured spread and want alerts plus an API. Casual traders get more from a free scanner first.