Expired50% confidenceFactExact time
Codex has a context mechanism described as 'short-term memory' that stores everything said and done throughout a conversation, but has a capacity limit that grows with conversation length.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Advanced Codex Guide: A Complete Breakdown of Steering, Annotations, Skills, and Plugins
bilibili林粒粒呀6/20/2026
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.79% similarUnverifiedLarge language models are limited by context window length, requiring external memory mechanisms to extend their memory capacity.74% similarVerified大语言模型在长时间对话中会因上下文窗口限制而丢失早期信息69% similarUnverified聊天功能被塞进Codex工作台变成悬浮窗，且聊天列表滑到底部后内容会被输入框遮挡67% similar
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