It is the year 2025, December 29th is the day.

I have been using coding agents for the past 18 months, or maybe a little bit more. I have a feeling that 2026 is going to bring even more changes, bringing software craftsmanship to another level! That the optimistic me.

And hopefully, LLMs will produce less slop as people grow tired of it, and more researchers will access it as a game-changing tool.

So this note is just a log entry for the future me.

I am currently using Claude Code with Opus 4.5 for most of my coding tasks in Rails 8+, then running /review in Codex each time to review the PR.

The feeling of working with Opus is unprecedented: I do really feel confident in the output. But working with Codex as a safety net is a real superpower - it's catching things that I did not see during my own code review and GPT 5.2 is good with Rails projects.

Let's see how it ages.