GPT-6 Astra's experimental compaction in Codex saves notes across context windows, off by default
TheMoonMidas · x · 2026-09-05
Daniel Mac8 reveals a new experimental compaction mechanism for GPT-6 Astra in Codex, currently off by default and requiring manual enablement via a prompt.
Once enabled, Astra can:
- Save notes across context windows, carrying memory forward
- Search earlier context windows, including both messages and tool calls
According to the author, this makes Astra behave less like an amnesiac and makes the context window feel massively larger.
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