Claude Opus 4.6 and agent swarms were announced yesterday. That's some big upgrades for Claude Code.

OpenAI, the competition, offered us GPT-5.3-Codex, and this week gave us an app form of Codex that already has a million active users.

That's all very exciting, and next week is going to be about covering that.

This post is about all the cool things that happened before that, which we will be building upon now that capabilities have further advanced. This if from Before Times.

Almost all of it still applies. I haven’t had much chance yet to work with Opus 4.6, but as far as I can tell you should mostly keep on doing what you were doing before that switch, only everything will work better. Maybe get a bit more ambitious. Agent swarms might be more of a technique shifter, but we need to give that some time.