Ethereum co-founder Vitalik Buterin says a recent experiment that used AI to prototype the protocol’s roadmap out to 2030 in a matter of weeks is instructive — but comes with significant caveats. After a developer produced a reference implementation of the roadmap using AI tools, Buterin called the result an impressive demonstration and noted that AI is dramatically speeding up coding. He urged the community to entertain the possibility that parts of Ethereum’s roadmap could be completed faster and to a higher security standard than previously expected.
The approach, often called “vibe coding,” relies on large models to generate application and protocol code quickly. While model capabilities have jumped in a short time, generated code is not automatically safe: Buterin warned the rapid output “almost certainly has lots of critical bugs” and that some components in the prototype are only stubs where the AI did not produce full implementations. He emphasized that the current ability to produce such artifacts is far beyond what was possible six months ago, so the trend deserves close attention.
Given these limits, Buterin recommended a deliberate trade-off between speed and security when applying AI to core infrastructure. Rather than simply using AI to accelerate delivery, he suggested splitting the gains: take half the benefit as faster development and invest the other half into improving security. Concretely, that means generating far more test cases, applying formal verification where feasible, and producing multiple independent implementations to cross-check behavior.
Buterin said he’s excited by the prospect that truly bug-free code — once considered utopian for complex systems — might become achievable and expected in a new development environment augmented by AI. Still, he urged caution: accelerated prototyping is valuable only if paired with rigorous verification and review.
This conversation comes as the Ethereum Foundation released its “Strawmap,” a plan for upgrades over the next four years. Buterin has also proposed making Ethereum more quantum-resistant and expects account abstraction (smart accounts) to roll out within about a year. The AI-driven prototyping experiment highlights a dual reality: AI can meaningfully speed up protocol development, but adoption will require strong engineering practices, testing, and independent implementations to ensure security as the ecosystem moves faster.