Doesn't it autocompact only if it is about to run out of context? On these newer models the context is 1M tokens so it's quite difficult to reach. I run compacts manually when I stop in a good place and tokens are over 300k

1m is too high, they used to autocompact a little too soon, maybe I tweaked defaults, it was kind of annoying, 200k tokens is too soon for me, I feel like the sweet spot is around 400k tokens.

Funnily enough Groks API charges less when you are below 400k tokens.

Half a million can get you reasonably far with enough of your codebase within the models context window.

I lowkey blame the 1m context window as the start of Anthropics worse woes earlier this year.

You can change your compaction token limit to 400k if you want.

CLAUDE_AUTOCOMPACT_PCT_OVERRIDE

And

CLAUDE_CODE_AUTO_COMPACT_WINDOW