Unverified60% confidenceFactExact time
Codex'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.
2
Sources
60%
Confidence
Long-term
Relevance
7/12/2026
First Seen
Sources
Related Claims
UnverifiedDuring long sessions, Codex compresses the historical conversation to control context length.78% similarUnverifiedBy default, Codex does not remember what it has done in the past and starts from scratch with each new conversation.77% similarUnverifiedConversational products have limited context window capacity, and anything beyond it is truncated or forgotten, which is why AI "forgets things" in long conversations.75% similar
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