ArbBets is a popular arbitrage scanner that surfaces opportunities but requires you to trade manually. Arbitrage Agent scans more markets and executes both legs automatically. Here's how they compare.
| Feature | Arbitrage Agent | ArbBets |
|---|---|---|
| Type | Scanner + Execution | Scanner only |
| Markets monitored | 4,812 | 990+ |
| Execution | Parallel, both legs <400ms | Manual only |
| AI matching | Semantic, 99.2% precision | Unknown method |
| Circuit breaker | Yes — auto-unwind on partial fill | No |
| Kelly sizing | Yes | No |
| Kill switch | Yes | No |
| Paper trading | Yes (dry-run mode) | No |
| Venues | Polymarket + Kalshi | Polymarket + Kalshi + Opinion |
| Free tier | No (paid from $29/mo) | Yes (limited) |
| Starting price | $29/mo ($19 early bird) | $59/mo |
| API access | Coming soon | Yes (Premium plan) |
ArbBets is an arbitrage scanner for prediction markets. It monitors Polymarket, Kalshi, and Opinion, scanning markets every second and surfacing 100+ daily arbitrage opportunities.
The key distinction: ArbBets is a scanner only. It finds opportunities but does not execute trades. Users must manually open each platform, place orders, and manage timing — which means many spreads close before you can act.
ArbBets offers a free tier with limited access and paid plans starting at $59/month. It also provides an arbitrage calculator and educational blog content.
Source: https://getarbitragebets.com
Arbitrage Agent monitors 4,812 binary event markets across Polymarket and Kalshi in real time via WebSocket. AI-powered semantic matching (99.2% precision) links identical events across platforms — even when titles differ completely.
When a price gap creates an arbitrage opportunity, both legs execute in parallel under 400ms. A circuit breaker auto-unwinds if one leg fails, ensuring zero directional exposure. The agent is fully non-custodial — your capital stays on Kalshi and Polymarket at all times.
Difference 1
The biggest difference. ArbBets shows you opportunities; Arbitrage Agent executes them. Prediction market spreads typically close within 30-200 seconds — faster than most traders can manually place orders on two platforms. Automated parallel execution captures spreads that manual trading cannot.
Difference 2
Arbitrage Agent monitors nearly 5x more markets using AI-powered semantic matching at 99.2% precision. More markets means more opportunities detected, including niche events that smaller scanners miss.
Difference 3
Arbitrage Agent includes a circuit breaker that auto-unwinds if one leg fails, Kelly criterion position sizing, and a kill switch for instant exit. ArbBets has no risk management — because it doesn't execute trades, risk is entirely on the user.
Difference 4
Arbitrage Agent starts at $29/month ($19 early bird) — nearly half the price of ArbBets' $59/month entry point. And you get automated execution, not just scanning.
When to choose ArbBets
When to choose Arbitrage Agent
ArbBets is a solid scanner for traders who want to manually check and execute arbitrage opportunities. But if speed and automation matter — and in arbitrage, they almost always do — Arbitrage Agent is the stronger choice. It monitors 5x more markets, executes both legs in parallel under 400ms, and costs less. The only reason to choose ArbBets is if you need Opinion coverage or prefer full manual control.
Does ArbBets execute trades automatically?
No. ArbBets is a scanner only — it finds arbitrage opportunities but you must manually place orders on Polymarket, Kalshi, or Opinion yourself. Arbitrage Agent executes both legs automatically in parallel.
Which tool monitors more markets?
Arbitrage Agent monitors 4,812 markets vs ArbBets' 990+. More market coverage means more arbitrage opportunities detected.
Is ArbBets cheaper than Arbitrage Agent?
No. ArbBets starts at $59/month while Arbitrage Agent starts at $29/month ($19 early bird). ArbBets does offer a limited free tier, but it only includes scanning — not execution.
Can I use both tools together?
You could use ArbBets' free scanner to manually verify opportunities while running Arbitrage Agent for automated execution. However, Arbitrage Agent already includes its own opportunity scanner with broader coverage.
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