[rockwotj]

Isn’t codex open source and you can just go read what they do?

I have read the gemini source and it’s a pretty simple prompt to summarize everything when the context window is full

[MillionOClock]

It should be noted that OpenAI now has a specific compaction API which returns opaque encrypted items. This is AFAICT different from deciding when to compact, and many open source tools should indeed be inspectable to that regard.

[omneity]

It's likely to either be an approach like this [0] or something even less involved.

0: https://github.com/apple/ml-clara