Tool / applicationLiveArbitrage & Market Comparison

PredRadar

Compare live prices and scan arbitrage across major prediction-market venues.

Polymarket support
Partial
Pricing model
Freemium · from $30/month
Access requirement
Open access
Wallet required
No
Trade execution
None
Last editorial review
Sep 9, 2026

01 · Overview

What is PredRadar?

PredRadar compares live prediction-market prices across Polymarket, Kalshi and Betfair, with arbitrage scanning, market screening, price movers, calendar, watchlist, portfolio, API and MCP access. Best for: Users comparing equivalent markets, prices, and potential arbitrage across Polymarket, Kalshi, and Betfair while tracking movers, watchlists, and portfolios. Less suitable for: Users whose primary need is deep Polymarket wallet scoring. Key limitations: Arbitrage opportunities can disappear before execution and still require independent checks of contract equivalence, liquidity, fees and available depth.

APIArbitrageMCPMarket Analytics

02 · Best for

Who is PredRadar best for?

Best for

Users comparing equivalent markets, prices, and potential arbitrage across Polymarket, Kalshi, and Betfair while tracking movers, watchlists, and portfolios.

Not ideal for

Users whose primary need is deep Polymarket wallet scoring.

Limitations

Arbitrage opportunities can disappear before execution and still require independent checks of contract equivalence, liquidity, fees and available depth.

03 · Access & execution

How do access and execution work?

Entity typeTool / application
Polymarket supportPartial
Pricing modelFreemium · from $30/month
Free planYes
Access requirementOpen access
Wallet requiredNo
Trade executionNone
Product statusLive
BetfairKalshiPolymarket

Scope-aware product facts

What to look for

Surfaces

ProductWeb · Supported Evidence

Access modes

Primary workflowOpen access · wallet No · Not required · Non-custodial Evidence

Execution modes

Primary workflowNone · Not supported · Not required Evidence

Pricing offers

Pro-MonthlySubscription · $30 Evidence
Primary productFree plan · Supported Evidence

Data capabilities

Product data · P&LNot applicable · Not applicable Evidence
Product data · Fee accountingNot applicable · Fees included in P&L Evidence
Product data · Rewards accountingNot applicable · Rewards included in P&L Evidence
Product data · Open positions accountingNot applicable · Open positions included in P&L Evidence
Market data · Order book historyNot applicable · Not applicable Evidence

04 · Data provenance

Data provenance

Current coverage: CompleteA transparent record of which official sources were checked and when.

Data originMixed sources
PnL methodologyNot applicable
Fees includedNot applicable
Rewards includedNot applicable
Open positions includedNot applicable
Order-book historyNot applicable
Update cadenceReal time
Review provenance evidence

05 · Public footprint

Public footprint

Current public signals from official platform sources, shown with their observation dates.

Product activity

A transparent record of which official sources were checked and when.

Product statusLive
Tracked by PredAtlas sinceAug 25, 2026
Last editorial reviewSep 9, 2026
Official documentationYes

06 · Sources & review

How was PredRadar reviewed?

Documentation strength: CompleteA transparent record of which official sources were checked and when.

Review pending · Sep 9, 2026

Official product sources were checked for documented identity, scope, access, pricing and limitations. This is not a security audit, performance test or endorsement.