> defaulting to 400k context instead, with an option to configure your context window to up to 1M if preferred

This seems really useful!

I'm surprised that "Opus 4.6" (200K) and "Opus 4.6 1M" are the only Opus options in the desktop app, whereas in the CLI/TUI app you don't seem to even get that distinction.

I bet that for a lot of folks something like 400k, 600k or 800k would work as better defaults, based on whatever task they want to work on.