The hardest working man in blogging, Simon Willison, rounds up the biggest LLM trends of 2025. From inference-scaled “reasoning” and tool-using agents to the breakout moment for coding agents like Claude Code, the amount of change has been truly colossal. It’s a dense, opinionated timeline that connects product releases to what actually changed for developers and day-to-day workflows.
Posts for: #Coding-Agents
A better way to view Claude Code transcripts
Simon Willison released a Python CLI tool that converts Claude Code sessions into shareable HTML pages with more detail than Claude Code itself provides, including hidden thinking traces.
The Dotfiles Project
One recent observation I saw about AI tools is that as much as they enable you to do things you already do faster (or maybe better), perhaps more importantly, they enable you to do things that you wouldn’t have otherwise done.
I think my dotfiles project is a good example. I always wanted to have dotfiles that set up my environment in a way that maximizes my productivity, but was held back by my willingness to really dig deep into the settings of the highly configurable tools that I use. I think this was a rational decision, perhaps made more so by the fact that my job for the past 10 or 15 years has basically been thinking and going to meetings.
As a result, I hadn’t made any commits to my dotfiles since 2015, which was roughly the time I ran out of really good reasons to write code at work.