Compare memory approaches
Choosing memory: claude-mem and Letta.
Start with the work you want memory to support. Compare the current documentation for Letta with claude-mem’s local agent memory and CMEM Pro’s hosted observation and cloud sync.
Letta
Read the source.
Choose for your workflow.
Letta is a platform for stateful agents, with an open-source harness and an SDK for applications.
Letta documentationDocumentation reviewed October 5, 2026. Confirm current capabilities, pricing, and deployment requirements before choosing.
The claude-mem approach
Capture locally.
Recall where you work.
The free engine captures supported agent activity and keeps searchable memory on your machine. CMEM Pro adds hosted observation, cloud sync, and your private MCP link.
| Question to ask | claude-mem + CMEM Pro | Letta |
|---|---|---|
| What gets captured? | Activity from supported agent integrations. MCP recall alone does not capture every conversation. | Check current documentation ↗ |
| Where is it stored? | Local memory with the engine; synced observations also stored by CMEM when cloud sync is enabled. | Check current documentation ↗ |
| How do I recall it? | Search locally, or use your private Pro MCP connection from a compatible client. | Check current documentation ↗ |
| What does it cost? | Free open-source engine; CMEM Pro starts at $30/month. Model usage and higher tiers have their own terms. | Check current documentation ↗ |
Keep the useful part
Your next session
starts with context.
Install the open-source engine. Add CMEM Pro when you want hosted observation and cloud sync.