Prediction Market Cheat Sheet: Kalshi & Polymarket at a Glance
Every fee, every API endpoint, every resolution rule — on one page. Stop opening 8 tabs every time you trade. Print it, save it, never Google a platform detail again.
The Problem
You are about to place a trade. What are Polymarket's taker fees again? Does Kalshi charge for ACH withdrawals? Which API endpoint gets the order book? How do weather contracts resolve?
Every answer is a Google search away — and every search costs you seconds you do not have in a fast-moving market.
The Solution
This cheat sheet puts all the answers on one page. Platform comparison. Fee structures. API endpoints. Resolution criteria. Beginner pitfalls. Everything you need, zero scrolling.
Keep it open on your second monitor. Print it and pin it above your desk. Save it offline on your phone for trading on the go.
What's Inside
📋 Platform Comparison Table
Kalshi vs Polymarket side-by-side: regulation, access, market creation, settlement, platforms, liquidity, fees, KYC requirements, and which is best for your trading style.
💰 Fee Structures
Maker/taker fees for both platforms. ACH vs card deposit costs. Polymarket gas estimates. Cross-platform arbitrage cost thresholds — updated July 2026.
🔗 API Endpoints Quick Reference
Kalshi REST v2 + WebSocket, Polymarket CLOB + GraphQL. Most-used endpoints with example cURL commands. Authentication methods for both platforms.
🌍 International Access
Which countries can use which platform. VPN considerations. Withdrawal methods by region. What non-US traders need to know.
📊 Resolution Criteria
How Kalshi weather contracts resolve (NOAA data). What sources Polymarket uses for political markets (Associated Press). Where to verify economic indicators (FRED, BLS).
⚠️ Top 5 Beginner Pitfalls
The most common mistakes new prediction market traders make — and exactly how to avoid them. Based on real trader data, not guesswork.
"Traders who keep reference material at their fingertips execute faster and make fewer mistakes. This cheat sheet is the trading equivalent of a pilot's checklist — boring but essential."
— EdgeOutcome Team
Frequently Asked Questions
What is the Prediction Market Cheat Sheet?
A single-page PDF reference for Kalshi and Polymarket traders. It compares both platforms across every dimension that matters when you are trading: fees, API access, withdrawal methods, market types, and resolution rules.
What exactly is on the cheat sheet?
The sheet has 6 sections: (1) Comparison table, (2) Fee structures, (3) API endpoints, (4) International access guide, (5) Resolution criteria by market type, and (6) Beginner pitfalls. All on one page — designed for printing or second-screen reference.
Is this a physical product?
No — it is a digital PDF download. After purchase, you get an instant download link. Print it yourself or keep it on your devices.
How often is the cheat sheet updated?
We update it whenever Kalshi or Polymarket change their fees, API, or policies. Purchasers receive every update for free — for life. The current version is July 2026.
Do I need both platforms to use this?
No. The cheat sheet is useful even if you only trade on one platform — the API reference and fee section are valuable standalone. But it is most useful for traders active on both Kalshi and Polymarket.
Never Google a Platform Detail Again
One page. Every answer. Keep it open while you trade — faster decisions, fewer mistakes.
Get the Cheat Sheet — $5PDF download. Free lifetime updates.