Two examples of “vibe engineering”

The following two examples (via Simon Willison) show software projects on the large end of LLM capability.

Both projects involve significant amounts of code to be run over, sophisticated instructions, and a lot of autonomy from the agents. They are also successful, and show how these tools make it possible for individuals to achieve more than they could do on their own before. This raw capability changes the nature of software development.

What neither project has are multiple people working in a complex workflow, or legacy systems, or live business requirement and live customers to support.

Those are the areas where I want to see significant gains in 2026.