Strategies Guide
When Uniswap and Binance disagree on a token's price, patient traders get paid. The CEX vs DEX playbook.
Updated 2026-10-05 · 9 min read
CEX vs DEX arbitrage exploits price differences between centralized exchanges (Binance, Kraken, Coinbase) and decentralized exchanges (Uniswap, PancakeSwap, Raydium). The two venues discover prices through completely different mechanisms — order books versus automated market makers — so they disagree often, especially on volatile or newly listed tokens.
A token might trade at $2.40 on a CEX while the same token's DEX pool prices it at $2.52 after a whale buy. Buy on the CEX, sell into the DEX pool (or vice versa), pocket the gap. Simple in theory — the devil is in gas fees and slippage.
Token is cheaper on the CEX. Buy there, withdraw to your wallet, swap into the DEX pool at the higher price. Watch out: withdrawal time + gas can erase the edge.
Token is cheaper in the DEX pool (after a whale dump). Buy via swap, deposit to the CEX, sell higher. Deposit confirmations are the bottleneck here.
| Cost | Typical size |
|---|---|
| CEX trading fee | 0.05–0.1% per trade |
| DEX swap fee | 0.25–0.3% pool fee |
| Gas (Ethereum L1) | $2–$30+ depending on congestion |
| Price impact | Grows with your size vs pool depth |
| CEX withdrawal fee | Flat, varies by token |
Gas is the silent killer
On Ethereum mainnet, a $15 gas bill turns a 1% spread on a $500 trade into a loss. CEX vs DEX arbitrage shines on L2s (Arbitrum, Base) and cheap L1s (Solana, BNB Chain) — or with larger size on mainnet.
Risk warning
Smart-contract risk is unique to the DEX side: bugs or malicious contracts can drain funds. Stick to audited, high-liquidity pools while learning.
You need CEX order-book prices and DEX pool prices side by side, updating live. That is exactly what a crypto arbitrage scanner with CEX-vs-DEX coverage does — plus a paper trading bot to rehearse the mechanics without risking gas. Brush up on terms in the glossary.
Neither universally — the profit is in the *difference* between them. CEXs offer speed and depth; DEXs offer early access to new tokens and permissionless pools.
No. The DEX leg requires a self-custody wallet (e.g., MetaMask, Phantom) holding the chain's native token for gas.
Large enough that gas + fees are a small fraction of the spread. On mainnet that often means $2,000+; on L2s/Solana, a few hundred dollars can work.
Crypto Arbitrage Scanner detects CEX vs DEX gaps in real time across 16 exchanges — and the paper trading bot lets you practice risk-free.
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