letta-ai/letta
Letta is the platform for building stateful agents: AI with advanced memory that can learn and self-improve over time.
Provides structured memory blocks (human context, persona) that persist across agent interactions, enabling long-term learning and context retention. Offers both a local CLI tool (Letta Code) with skills and subagents, and a cloud API with Python/TypeScript SDKs, supporting model-agnostic deployment across providers like OpenAI and Anthropic.
21,550 stars. Actively maintained with 173 commits in the last 30 days.
Stars
21,550
Forks
2,260
Language
Python
License
Apache-2.0
Category
Last pushed
Mar 13, 2026
Commits (30d)
173
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