What are the best alternatives to letta?

The top alternatives to letta are LangChain, OpenAI Agents SDK, Claude Agent SDK, ranked by real usage data on Unfragile.

Are there free alternatives to letta?

Yes, 17 free alternatives to letta exist, including LangChain, OpenAI Agents SDK, Claude Agent SDK.

20 alternatives ranked by real usage data. letta scores 46/100 — 20 tools score higher.

Originalletta

Letta is the platform for building stateful agents: AI with advanced memory that can learn and self-improve over time.

20 alternatives

17 free options

20 score higher

Framework for building LLM apps — chains, agents, RAG, memory. Python & JS/TS. 200+ integrations.