OpenAI compaction is very different than Anthropic compaction, especially in 5.6

I use GLM5.2 and gpt-5.5 and 5.6 and never noticed any quality degradation near the limits of the context or due to compaction.

>I use GLM5.2 and gpt-5.5 and 5.6 and never noticed any quality degradation near the limits of the context or due to compaction.

that's because you and your workloads probably fall into a bucket of users where compaction is tuned well.

but the reality is that those processes need to pick what to carry over, and that's a tough thing to get right for everyone, so for me compaction is a signal to restart the session or to tell the LLM to reference existing design docs lest we go off the rails.

large context limits is one of the things that make the open model competitors very attractive to me.