Last night I suddenly got noticeably better performance in Claude Code. Like it one shotted something I'd never seen before and took multiple steps over 10 minutes. I wonder if I was on a test branch? It seems to be continuing this morning with good performance, solving an issue Gemini was struggling with.

Just saw this popup in claude cli v1.0.0 changelog

What's new:

• Added `DISABLE_INTERLEAVED_THINKING` to give users the option to opt out of interleaved thinking.

• Improved model references to show provider-specific names (Sonnet 3.7 for Bedrock, Sonnet 4 for Console)

• Updated documentation links and OAuth process descriptions

• Claude Code is now generally available

• Introducing Sonnet 4 and Opus 4 models

Yes, you can type /model in Code to switch model, currently Opus 4 and Sonnet 4 for me.

The new page for Claude Code says it uses opus 4, sonnet 4 and haiku 3.5