AI Agent Memory in 2026: How It Works and When to Use It
Most agent demos forget everything between calls. That works for toy scripts. It breaks the moment you want an agent that improves over a week of work.
Memory is not one thing. It is several different stores that solve different failure modes.
Short-term context vs long-term recall
The context window is your agent's working memory. It is fast and expensive. Keep it for the current task only.







