Overview
For Kalshi traders looking to capitalize on price discrepancies across prediction markets, the PolyArbitrage (Chrome Extension) vs ArbBets comparison is worth examining closely. Both tools are designed to surface arbitrage opportunities that involve Kalshi's event contracts, but they approach the problem differently in terms of interface, scope, and user experience. As the prediction market space matures and Kalshi continues to grow as a CFTC-regulated exchange, having the right arbitrage tooling can meaningfully impact a trader's edge.
PolyArbitrage (Chrome Extension) is a browser-based tool available through the Chrome Web Store that specifically targets price differences between Polymarket and Kalshi. ArbBets takes a broader approach, positioning itself as an arbitrage tool for prediction markets that includes Kalshi among its supported platforms. Both tools are actively maintained, making them legitimate options for traders who want to identify and act on mispriced contracts across markets.
PolyArbitrage (Chrome Extension) vs ArbBets: Key Differences
| Feature | PolyArbitrage (Chrome Extension) | ArbBets |
|---|---|---|
| Primary Function | Surfaces arbitrage opportunities between Polymarket and Kalshi | Identifies arbitrage opportunities across prediction markets including Kalshi |
| Platform / Interface | Chrome browser extension installed directly in the browser | Web-based tool accessed via a dedicated platform |
| Market Coverage | Polymarket and Kalshi specifically | Multiple prediction markets including Kalshi |
| Target User | Traders who actively use Polymarket and Kalshi and want in-browser alerts | Traders seeking a broader cross-market arbitrage dashboard |
| Automation Level | Passive opportunity surfacing within the browser; manual execution assumed | Not available |
| Pricing | Not available | Not available |
| Best For | Traders who want a lightweight, browser-native way to spot Polymarket–Kalshi spreads | Traders who want a centralized tool covering a wider range of prediction market platforms |
When to Choose PolyArbitrage (Chrome Extension)
PolyArbitrage (Chrome Extension) is a strong fit for traders who spend time on both Polymarket and Kalshi and want arbitrage signals delivered without leaving their browser. Its Chrome extension format means it integrates directly into your existing browsing workflow, making it low-friction to use alongside the exchanges themselves.
- You primarily trade on both Polymarket and Kalshi and want a focused tool that monitors that specific pair of markets without extra noise from other platforms.
- You prefer a browser-native experience and don't want to switch between multiple dashboards or applications to track opportunities.
- You're comfortable manually executing trades after the extension surfaces a spread, and you want a lightweight tool that doesn't require a separate account or setup process beyond a Chrome installation.
When to Choose ArbBets
ArbBets is better suited for traders who want a more comprehensive view of the prediction market arbitrage landscape, not just the Polymarket–Kalshi corridor. Its web platform format suggests a dedicated interface designed around the arbitrage use case, which may offer more structured data presentation and broader market coverage.
- You trade across multiple prediction market platforms and want a single tool that aggregates arbitrage opportunities from a wider set of markets beyond just Polymarket and Kalshi.
- You prefer working in a dedicated web application rather than a browser extension, particularly if you want a cleaner separation between your research tools and your active browsing sessions.
- You want a tool that is purpose-built around the arbitrage workflow as a standalone product, rather than something layered on top of your browser as an add-on.
Verdict
Both tools serve legitimate and distinct needs in the Kalshi arbitrage space. PolyArbitrage (Chrome Extension) wins on simplicity and focus — if your arbitrage strategy centers specifically on the Polymarket–Kalshi pair and you value a frictionless, browser-integrated experience, it's the more targeted choice. ArbBets has the edge for traders who need broader market coverage and prefer a dedicated platform environment. Since pricing details are not publicly confirmed for either tool, prospective users should visit both websites directly to evaluate cost and feature depth before committing. For most Kalshi-focused traders, the deciding factor will come down to whether you need a narrow, browser-based tool or a wider arbitrage dashboard.