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AI agent memory tools
4 memory layers that let AI agents remember across sessions. Memory layers and platforms that store facts, preferences and history for AI agents outside the model. Compare storage approach, self-hosting options and SDK support.
How to read this page. The tools are grouped by category and are not ranked. Pricing labels come from vendors' own pages when we could confirm them. Always verify plans and limits on the vendor's site.
AI Agents & Frameworks (4)
| Tool | What it does | Pricing | Link |
|---|---|---|---|
| Cognee | Open-source memory layer for AI agents that combines knowledge graphs and vector search, self-hosted or in the cloud. | Freemium | Official site |
| Letta | Platform for building stateful agents with long-term memory. | Freemium | Official site |
| Mem0 | Memory layer for AI agents and applications. | See site | Official site |
| Zep | Context engineering and memory platform for AI agents. | Freemium | Official site |