Letta
Agent runtime with persistent memory, from the MemGPT project.
Key features
- Stateful agents that remember and continue learning
- Store agent memory in git-based context repositories
- Let agents reason about context during idle time
- Share agents with teammates and set access controls
- Bring your own model keys on all plans
- Category
- Agents
- Who it's for
- Individuals, teams, and developers who use or build stateful AI agents.
- Tags
- memoryversion-control
- Website
- letta.com
- Listed
- 2026-09-15
Frequently asked questions
Is Letta free?
Letta has a free plan, with paid tiers for more usage or features.
How much does Letta cost?
Paid plans from $20/month, according to its pricing page.
What is Letta used for?
Agent runtime with persistent memory, from the MemGPT project. Typical uses: stateful agents that remember and continue learning; store agent memory in git-based context repositories; let agents reason about context during idle time.
What are the best Letta alternatives?
Alternatives in the same category include Agensh, Omnara, Dust, Mastra, Harness².
Related in Agents
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- Agno Python framework for agents, formerly Phidata.
- Alter Privileged access for AI agents. Vaulted credentials, per-call policy, and an audit log. Free tier is 10,000 API calls a month.
- Amazon Bedrock AgentCore Serverless AgentCore Runtime in Amazon Bedrock for deploying and scaling AI agents.
- AutoGen Microsoft's framework for multi-agent conversations.
