Best Spread

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max arbitrage opportunity

Matched Markets

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across both platforms

Avg Spread (all)

—

mean spread detected

Spreads > 0.5%

—

spreads above 0.5%

Min spread: %

# ↕	Market	Polymarket BID/ASK	Opinion BID/ASK	Spread ↓	Direction	Match ↕	Volume 24h ↕	Expires ↕	Links
Fetching markets from Polymarket & Opinion...

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Spread Distribution

Category Breakdown

Spread Distribution by Market (top 60)

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Stat	Value	Interpretation

About ArbViews

What is this?

ArbViews detects pricing discrepancies between Polymarket and Opinion.trade — two prediction market platforms. When the same event is priced differently, you can buy YES on the cheaper platform and sell (or buy NO) on the more expensive one.

How it works

1. We fetch open markets from Opinion Open API and Polymarket Gamma API.

2. Markets are fuzzy-matched by title similarity using text normalization.

3. The spread is calculated via real bid/ask prices: spread = 1 − (poly_yes_ask + op_no_ask) or 1 − (poly_no_ask + op_yes_ask) — whichever is higher. Positive spread = real arbitrage opportunity.

4. Markets are ranked by spread descending, with volume and expiry filters available.

APIs Used

Polymarket

gamma-api.polymarket.com/markets
clob.polymarket.com/prices

Opinion

api.opinion.trade/v1/markets
api.opinion.trade/v1/prices

⚠️ Risk Disclaimer: This tool is for informational purposes only. Prediction market arbitrage carries risks including liquidity constraints, timing risk, and platform-specific fees. Prices may be delayed or inaccurate. You are solely responsible for your trading decisions. This is not financial advice.

Community

discord.gg/rbfE4zrgKC

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t.me/arbviews

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