As AI moves toward widespread adoption, DataFi is quickly becoming the next major opportunity at the convergence of Web3 and AI. This comprehensive analysis details how data is transforming into a core asset and investigates the innovative strategies and user engagement models adopted by projects such as Sahara, Vana, and Yupp. It also demonstrates how DataFi uses smart contracts and token-based incentives to harness global human capital. In doing so, it is redefining the dynamics of the AI data marketplace.