Compare memory & context
Cognee vs Letta
Two memory & context tools for AI agents, side by side. Facts come from each tool's own site.
| Cognee | Letta | |
|---|---|---|
| What it does | Open-source agent memory platform built on graph and vector stores. | Platform for stateful agents that keep long-term memory. |
| In their words | Cognee - Open-Source Agent Memory Platform | Letta | Machines that learn |
| Open source | Yes | Yes |
| Website | cognee.ai | letta.com |
| Link checked | 2026-10-16 | 2026-10-16 |
More options:Alternatives to CogneeAlternatives to LettaGuide: Best memory layers for AI agents
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