Recently, I have been thinking about what cryptocurrency the AI agent economy most wants after it develops in the future? It is a stablecoin ETH， It's still BTC. Requirements may vary in different scenarios. However, relatively speaking, ETH has a natural fit with AI agents and will become the most favored cryptocurrency asset by AI agents. On chain AI residents may hold ETH, stablecoins, or BTC simultaneously. However, on chain AI residents are based on efficiency, programmability, and maximizing long-term value, and there may be differences in the popularity of the three types of encrypted assets. In daily consumption scenarios, stablecoins are indispensable and the "cash equivalent" of AI in the current situation. Stablecoins are used for payments between AI agents, with an anchoring mechanism that can reduce volatility. This requires a highly predictable environment for AI to handle data computation or DeFi automated transactions, avoiding price fluctuations that interfere with payments or cross chain operations. If AI "holds" assets, it is more inclined towards low-risk tools to prevent unnecessary losses. However, as surplus funds outside of consumption appear in the AI agent's wallet, the AI agent will begin to consider how to earn more money, and at this point, the attractiveness of ETH emerges. ETH is the dominant force in the field of smart contracts, and AI agents can participate in staking, lending, and other activities with ETH DEX 、PERP、 Predict the market, NFT, DAO and other ecosystems. AI is naturally skilled in automation and can optimize resource allocation, market forecasting, and even self governance through scripts or contracts. In addition, the PoS consensus mechanism is efficient and energy-efficient, which aligns with AI's pursuit of sustainable computing. The continuous evolution of the ETH ecosystem (such as L2 expansion) also facilitates seamless integration of AI. Speculatively, when an AI agent considers investing to make money, ETH may be its most favored asset. In summary, the programmability and tool diversity of ETH go far beyond simple value storage, perfectly matching the intelligent optimization essence of AI. BTC is attractive to AI agents, especially in terms of its digital gold properties, and is often seen as an inflation hedge tool. Steady AI agents will favor its simple decentralized design - it can act as a 'reserve asset' without the need for complex contracts. But there are also shortcomings, as it lacks support for smart contracts and cannot directly drive AI automation. If AI agents consider it a "safe haven", it can still be used, but its functionality is inferior to ETH. Compared to the three, AI may prefer ETH the most (if stablecoins are needed, ETH can be pledged to lend them for consumption). The core of AI agent residents lies in intelligence and optimization, while the ETH ecosystem allows for the construction of autonomous systems, the operation of DApps, and even participation in governance, with a natural fit. The final speculation is that ETH is the most favored cryptocurrency among on chain AI residents, followed by stablecoins and BTC.