Letta vs Mastra
LettaAutonomous Agents Platforms
Free / Open SourcePublished price
MastraAI Agents
Open sourcePublished price
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Letta | Mastra | |
|---|---|---|
| Overview | ||
| Tagline | Making machines that learn | The TypeScript framework for agents and workflows. |
| Description | Stateful AI agent framework formerly MemGPT, enabling agents with persistent memory and self-editing context for long-running tasks. | Mastra is a TypeScript framework for building AI agents, workflows, and retrieval systems with a developer-first, production-oriented approach. |
| Category | Autonomous Agents Platforms | AI Agents |
| Pricing | ||
| Published price | Free / Open Source | Open source |
| Company | ||
| Founded | 2023 | 2024 |
| Team size | 11-50 employees | 11-50 employees |
| Headquarters | Berkeley, CA | San Francisco, CA |