# Memory

> Information stored outside the immediate prompt so an AI system can recall preferences, facts, or progress later.

- Category: Context & Memory
- Stage: Rising
- Also called: Agent memory, Long-term memory
- Canonical: https://www.joelcsaji.com/ai-dictionary/memory

## Plain English

Memory is what lets the system remember beyond one chat or one run.

## Example

An agent stores that the user prefers concise summaries and that the project uses Bun, not npm.

## Why it matters

Memory improves continuity, but it also creates new risks such as stale, sensitive, or poisoned context.

## Related

- [Episodic Memory](https://www.joelcsaji.com/ai-dictionary/episodic-memory)
- [Semantic Memory](https://www.joelcsaji.com/ai-dictionary/semantic-memory)
- [Memory Poisoning](https://www.joelcsaji.com/ai-dictionary/memory-poisoning)

## Mentioned in

- [iOS 27, iPadOS 27, macOS 27, watchOS 27 and tvOS 27](https://www.joelcsaji.com/blog/ios-27-ipados-27-macos-27-watchos-27-tvos-27)
- [Next.js 16: Turbopack, React Compiler, and the Future of Fast](https://www.joelcsaji.com/blog/nextjs-16-turbopack-react-compiler-future-of-fast)
- [Why React is Better Than Angular](https://www.joelcsaji.com/blog/why-react-is-better-than-angular)
- [The Significance of Data Structures and Algorithms in Modern Computing](https://www.joelcsaji.com/blog/the-significance-of-data-structures-and-algorithms-in-modern-computing)

## Sources

- [LangChain: Long-Term Memory](https://docs.langchain.com/oss/python/deepagents/long-term-memory)
- [OWASP Agentic AI Top 10](https://genai.owasp.org/2025/12/09/owasp-top-10-for-agentic-applications-the-benchmark-for-agentic-security-in-the-age-of-autonomous-ai/)