Best Letta Alternatives
98 frameworks you can use instead of Letta. Ranked by popularity, tag overlap, and live GitHub signals.
memorystatefulpythonlong-term-memoryagentsopen-source
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Letta
ReferenceStateful agents with long-term memory — formerly MemGPT — 15K stars
15.0K120.0K/w5d ago150
Top Alternatives to Letta
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Agno
Build, run, and manage agentic software at scale with 38K+ stars
OSSFree
Agno AGI
39.1Ktoday399
3 shared tags
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LangGraph
LangChain's framework for building stateful agent graphs — 26K+ stars
OSSFree
LangChain
28.1Ktoday271
3 shared tags
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LangChain
Build context-aware reasoning applications with LLMs
OSSFree
LangChain AI
131.9K850.0K/wtoday469
2 shared tags
F
FastAgency
Rapid multi-agent deployment framework for Python
OSSFree
airt
1.8K20.0K/w1w ago25
2 shared tags
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Langflow
Visual framework for building and deploying AI agents — 145K+ stars
OSSFree
Langflow AI
146.4Ktoday318
2 shared tags
M
Mastra
TypeScript framework for building AI agents and workflows
OSSFreeTrending
Mastra
9.8K12.0K/w4d ago85
2 shared tags