# Letta


- Source: https://zarifautomates.com/tools/letta
- Category: ai agents
- Website: https://www.letta.com
- Rating: 4.5/5 (1 ratings)

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## Pros

- Built-in agent runtime with memory as a first-class primitive
- Good fit for research and autonomous agent use cases
- Moves info between immediate context and long-term storage intelligently
- OS-inspired tiered memory — virtual context management like OS memory hierarchy
- Strong for long-running agents that need to handle very long tasks

## Cons

- Bundles its own agent runtime — not a plug-in layer for existing agents
- Integration work higher if you already have an agent framework
- Smaller ecosystem than Mem0 or LangChain