Unverified50% confidenceFactExact time
During long sessions, Codex compresses the historical conversation to control context length.
1
Sources
50%
Confidence
Long-term
Relevance
10/16/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedCodex's memory does not rely on the chat window to persist, because the context window fills up quickly and is repeatedly compressed, causing the agent to forget the initial conversation after a few rounds.78% similarUnverifiedCodex has warned that hard-switching models mid-session may degrade the quality of subsequent conversations.74% similarUnverifiedLarge language models have a context window length limit, and when conversation history or tool call records become too long, the Agent needs to summarize and compress the history to free up space.71% similarUnverifiedBy default, Codex does not remember what it has done in the past and starts from scratch with each new conversation.70% similarUnverifiedThe chat function has been stuffed into the Codex workbench as a floating window, and the chat list content is obscured by the input box after scrolling to the bottom.69% similar
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