CEX vs DEX
Centralised exchanges optimise for liquidity, fiat access and convenience; DEXs optimise for custody, permissionless listing and on-chain transparency.
/ quick answer
A CEX holds your assets on an internal ledger and matches trades off-chain. A DEX executes swaps through smart contracts from your own wallet. Most active users end up with both: fiat on-ramp and deep majors on a CEX, early tokens and DeFi access through a wallet and DEX.
| Dimension | Option A | Option B |
|---|---|---|
| Custody | CEX: exchange holds keys; account can be restricted | DEX: you hold keys; nobody can freeze the position |
| Listings | CEX: reviewed, slower, fewer scams | DEX: permissionless, instant, scam-heavy |
| Costs | CEX: trading fee, no gas | DEX: gas + slippage + fee, worse on small orders |
| Transparency | CEX: internal ledger, opaque flows | DEX: every trade public and analysable |
| Recovery | CEX: password reset and support | DEX: seed phrase only, no recourse |
- →Fiat deposits and large majors trades — CEX
- →Early-stage tokens and DeFi positions — DEX
- →On-chain research you want to verify yourself — DEX data
/ frequently asked
What is the difference in CEX vs DEX?
A CEX holds your assets on an internal ledger and matches trades off-chain. A DEX executes swaps through smart contracts from your own wallet. Most active users end up with both: fiat on-ramp and deep majors on a CEX, early tokens and DeFi access through a wallet and DEX.
What are the main points of comparison?
Custody: CEX: exchange holds keys; account can be restricted vs DEX: you hold keys; nobody can freeze the position · Listings: CEX: reviewed, slower, fewer scams vs DEX: permissionless, instant, scam-heavy · Costs: CEX: trading fee, no gas vs DEX: gas + slippage + fee, worse on small orders · Transparency: CEX: internal ledger, opaque flows vs DEX: every trade public and analysable · Recovery: CEX: password reset and support vs DEX: seed phrase only, no recourse
Which one should I choose?
Use a CEX for fiat and size, a Web3 wallet plus DEX for anything permissionless or composable. Keep working capital small on whichever side you trade actively.
/ continue exploring
Related concepts
The vocabulary this page depends on.
- →Crypto Risk Management
Risk management in crypto is position sizing plus custody hygiene: deciding what you can lose per trade and what a single compromise can reach.
- →DEX
A DEX is an exchange implemented as smart contracts, where trades settle on-chain from your own wallet instead of an internal exchange ledger.
- →Slippage
Slippage is the difference between the quoted price and the executed price, caused by pool depth and by other transactions landing first.
- →Stop Loss & Take Profit
Stop loss and take profit are pre-committed exit rules that convert a discretionary decision into an executable instruction.
Related workflows
Turn this into a repeatable process.
- →DEX Trading Workflow
Execute an on-chain swap deliberately: research, liquidity check, route comparison, sized order, then position monitoring.
- →Automated Crypto Alerts
Define the conditions that would change a decision, monitor them automatically, and receive one clean notification instead of watching charts.
- →AI Trading Assistant Workflow
Use AI to research, structure and pressure-test a trade plan, keeping approval and execution firmly human.
- →Compare DEX Prices And Routes
Find the genuinely best execution for a swap by comparing net output after slippage, fees and gas across venues and chains.
Related tool stacks
The tools that run it in production.
- →DeFi Execution Stack
Web3 wallet, DEX aggregator, DeFi protocols and a portfolio tracker — the toolset for actually deploying capital on-chain.
- →Crypto Trading Stack
Market data, charting, DEX access and a Web3 wallet — the minimum toolset for deliberate on-chain trade execution.
- →AI Trading Stack
Adds an AI analysis and risk-review layer on top of a trading stack, keeping approval and execution human.
Related prompts
Reusable prompts for this job.
- →Crypto Market Analysis Prompt
Produces a structured market brief: regime, liquidity conditions, sector rotation, catalysts and what would change the view.
- →Trading Strategy Generation Prompt
Converts a market view into a written, testable strategy with entry rules, invalidation, sizing and explicit failure conditions.
- →Entry & Exit Framework Prompt
Forces every position to have a documented entry zone, invalidation, sizing and exit plan before capital is committed.
- →Position Sizing Prompt
Calculates defensible position size from risk-per-trade, invalidation distance and real exit liquidity.
Related use cases
How people apply it, and what came out.
- →Automate Trading Alerts
Encoding invalidation levels as automated alerts removed screen-watching and caught two thesis breaks the trader would have slept through.
- →Get Token Alerts
Replacing price-only alerts with condition-based rules cut notifications by 80% and caught a liquidity withdrawal before price reflected it.
- →Automate DCA
Switching from daily manual buys to a weekly automated schedule cut fee drag from 4.1% to 0.3% of each buy and removed missed cycles.
- →Compare DEX Prices
Comparing net output instead of headline quotes recovered around 1.9% on a $180k swap by splitting it across two routes.
Comparisons & alternatives
Pick between the options.
- →Manual Trading vs Automated Trading
Manual trading adapts to context; automation enforces consistency. Most durable setups automate monitoring and keep judgement human.
- →DCA vs Lump Sum
DCA spreads entry over time to reduce timing risk and behavioural error; lump sum maximises exposure time at the cost of concentrated entry risk.