Letta
Stateful agents with long-term memory — formerly MemGPT
About
Letta (formerly MemGPT) is an open-source framework for building stateful AI agents with persistent, editable memory. Agents remember conversations across sessions, search their own memory, and update their knowledge over time — solving context window limitations.
Choose Letta when…
- •need agents with persistent cross-session memory
- •context window length is limiting your application
- •building personal assistants or long-running agents
Builder Slot
The framework that structures how your AI thinks, uses tools, and coordinates agents
Other tools in this slot:
Stack Genome Detection
AIchitect's Genome scanner detects Letta in your project via these signals:
lettaLETTA_API_KEY.letta/Integrates with (1)
Letta agents use OpenAI models as their reasoning core, extended with Letta's persistent memory layer.
→ Long-running stateful agents that remember context across sessions without context window limits.
Alternatives to consider (1)
Pricing
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Health ↑ 75 → 100
3 days ago
Health ↓ 90 → 75
4 days ago
Health ↑ 75 → 90
3 weeks ago
Health ↓ 85 → 75
4 weeks ago
Pricing updated
5 weeks ago
Ruled out by 1 stack
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