Leading digital analytics platform for product insights and customer journey analytics
Key facts
Pricing
Freemium
Use cases
Developers building applications that require agents to maintain persistent memory and learn about users over time (verified: 2026-01-29)., Software engineers using a memory-first coding harness to work with agents that persist across different sessions (verified: 2026-01-29)., Teams creating production-ready agentic workflows that remain model-agnostic while utilizing stateful reasoning capabilities (verified: 2026-01-29).
Strengths
The platform provides a stateful agent architecture that allows agents to remember and learn about users over time (verified: 2026-01-29)., Users can connect their own LLM API keys to run agents locally or through the Letta Developer Platform (verified: 2026-01-29)., The system supports a memory-first coding harness called Letta Code which enables portable agents across different models (verified: 2026-01-29).
Limitations
The Free plan limits users to a maximum of three stateful agents for their development projects (verified: 2026-01-29)., Access to frontier models on the Letta API requires a paid Pro plan subscription starting at twenty dollars monthly (verified: 2026-01-29).
Last verified
Jan 29, 2026
Plan your next step
Use these links to move from this review into compare and task workflows before committing to a tool stack.
Compare • Browse by task • Guides • Tools • Deals
Priority tasks: Content writing tasks • Code generation tasks • Video generation tasks • Meeting notes tasks • Transcription tasks
Priority guides: AI SEO tools guide • AI coding tools guide • AI video tools guide • AI meeting notes guide
Strengths
- The platform provides a stateful agent architecture that allows agents to remember and learn about users over time (verified: 2026-01-29).
- Users can connect their own LLM API keys to run agents locally or through the Letta Developer Platform (verified: 2026-01-29).
- The system supports a memory-first coding harness called Letta Code which enables portable agents across different models (verified: 2026-01-29).
Limitations
- The Free plan limits users to a maximum of three stateful agents for their development projects (verified: 2026-01-29).
- Access to frontier models on the Letta API requires a paid Pro plan subscription starting at twenty dollars monthly (verified: 2026-01-29).
FAQ
What are the primary differences between the Free and Pro plans offered by the Letta platform?
The Free plan allows for three stateful agents and requires users to provide their own LLM API keys. In contrast, the Pro plan costs twenty dollars per month and provides unlimited stateful agents along with access to frontier models on the Letta API and 20,000 monthly credits (verified: 2026-01-29).
How does the Letta Code feature assist developers in maintaining agent persistence during software development?
Letta Code functions as a memory-first coding harness built on the Letta API. It allows developers to work with a persisted agent that learns over time instead of working in independent sessions, ensuring the agent remains portable across different models (verified: 2026-01-29).
What specific features are available for large organizations requiring enterprise-grade security and support?
The Enterprise plan is designed for organizations with high volume needs and includes role-based access control, Single Sign-On via SAML or OIDC, and dedicated support. It also features volume-based pricing and increased quotas to accommodate larger operational scales (verified: 2026-01-29).
