Why this pair specifically
For arbitrage these are not just two exchanges from a list. Binance and OKX are the only two venues whose books are thick enough for the price to count as real. If a gap shows up between them it is almost certainly genuine; if it shows up only on a thin venue, it is an artefact.
Pairs and depth
On major-pair depth Binance leads, though not by much. On trading pair count OKX often exceeds it, including coins Binance does not list at all.
The practical conclusion: if you need a coin Binance does not have, check OKX before dropping to smaller venues — the book will be thicker.
The built-in Web3 wallet is the real difference
A full non-custodial wallet with a decentralised exchange aggregator lives inside the OKX app. You can buy a coin on spot, move it to your own wallet and swap it on a DEX without leaving one interface. Binance offers no such combination.
For arbitrage between centralised and decentralised venues this shortens the path considerably. But understand the difference: funds in the Web3 wallet are yours, the exchange is not responsible for them and cannot recover them.
A separate European entity
A detail people hit late: for users in the European Economic Area, OKX operates through a separate legal entity on a separate domain. Accounts and API keys do not carry across — we ran into this ourselves connecting the exchange to our scanner.
P2P
Binance has more advertisements. OKX has a tidier interface and payment-method filters that behave more predictably, and it is among the strongest for CIS currencies and the Turkish lira.
Regulatory history
Both settled with US authorities: Binance in November 2023 for around four billion dollars, OKX in February 2025 for roughly half a billion. Same story — serving American users without permission. For a user elsewhere the consequence is the same: source-of-funds checks tighten after such settlements.
Who each suits
Binance — when book depth and the largest P2P matter most.
OKX — when you want a wide listing together with depth, and especially if you work across centralised and decentralised venues.
