The centralized exchanges (CEX) sector is going through a decisive phase. After the meteoric rise of Binance and the collapse of FTX, user trust becomes a central issue. In this context, OKX [Learn and Earn: Discover OKX's Knowledge Hub] is gaining ground by combining security, transparency, and technological ambition. The exchange appeals to experienced traders, institutional investors, and Web3 enthusiasts. This article inaugurates a series of analyses aimed at comparing OKX with other market leaders such as Binance, Coinbase, or Kraken. Each part will explore a strategic aspect of the OKX ecosystem: fees, staking, trading bots, or educational tools. An essential insight to understand the new face of the crypto market.