Tools
Is there still a widespread belief that LLMs and coding agents are good for greenfield development but don't help for maintaining large exis…
Simon Willison discusses the perception that LLMs and coding agents are primarily useful for greenfield development (starting new projects from scratch) rather than for maintaining and modifying large
Simon Willison discusses the perception that LLMs and coding agents are primarily useful for greenfield development (starting new projects from scratch) rather than for maintaining and modifying large existing codebases. The post likely challenges or explores this belief and examines whether AI tools have become more effective at legacy code maintenance tasks.
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Source: Simon Willison (X) | 2026-04-17