# Letta

Stateful agent platform and open-source harness built around persistent memory and context management.

- Company: Letta
- Category: Platforms & Infrastructure
- Business model: Freemium
- Availability: unknown
- Launched: Not recorded
- Tags: memory, developer-tools
- Website: https://www.letta.com/
- Documentation: https://docs.letta.com/
- Pricing page: https://docs.letta.com/pricing
- License: Not recorded
- Canonical URL: https://globalaiproductindex.com/products/letta/
- Record updated: 2026-11-03

Typical uses include Persistent context for AI agents; Personalization across conversations. Documented capabilities: Agents retain state and memory across conversations; Configurable tools, skills and context management; CLI, cloud agents and self-hosted app server options.

## Key features

- Agents retain state and memory across conversations
- Configurable tools, skills and context management
- CLI, cloud agents and self-hosted app server options

## Use cases

- Persistent context for AI agents
- Personalization across conversations

## Pricing

Free supports up to 3 stateful agents with your own model access. Pro is USD 20 per month; developer API plans have separate base and usage charges, including active agents and tool execution. A personal plan is not an unlimited API entitlement.

## FAQ

**Where does Letta fit in a workflow?**

Stateful agent platform and open-source harness built around persistent memory and context management. Agents retain state and memory across conversations.

**What costs and limits should I compare before choosing Letta?**

Free supports up to 3 stateful agents with your own model access. Pro is USD 20 per month; developer API plans have separate base and usage charges, including active agents and tool execution. A personal plan is not an unlimited API entitlement.

## Sources

- [Letta — official product](https://www.letta.com/)
- [Letta — official documentation and terms](https://docs.letta.com/)
- [Letta — official documentation and terms](https://docs.letta.com/pricing)

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Data from the [Global AI Product Index](https://globalaiproductindex.com/), licensed CC BY 4.0.