What Can Ethereum Do That Bitcoin Can't? The Difference in Plain English, and Why It Matters for the Price

Bitcoin and Ethereum both deal in crypto, but one can run programs while the other deliberately cannot, and that single design choice shapes everything from anonymous AI payments to why their prices move so differently.

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Ethereum (CRYPTO: ETH) can run programs on its own network, while Bitcoin (CRYPTO: BTC) serves a more singular purpose: holding and transferring coins. This fundamental difference lies at the heart of the ongoing Ethereum vs Bitcoin debate, highlighted by two significant projects launching in October 2026.

On October 1, the Ethereum Foundation introduced zkAPI, a new system that lets users pay for AI models while maintaining anonymity. In contrast, Tether (CRYPTO: USDT) plans to reintroduce USDT to the Bitcoin network later in October but relies on an external system called RGB to facilitate the move.

Ethereum Runs Smart Contracts, While Bitcoin Holds and Moves Coins

At its core, Bitcoin maintains a public ledger that tracks coin ownership, allowing anyone to send or receive funds without needing bank approval. Satoshi Nakamoto designed this system in 2008 and implemented a fixed supply cap of 21 million coins.