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Letta alternatives · AI Agents

Self-hosted alternatives to Letta

The Letta listing does not say it can be self-hosted. 28 of the 178 other AI agents in this directory can be self-hosted, according to their own sites.

Letta has a free plan. Paid plans start at $20 per month. 25 of them are free or have a free plan.

28 tools · Listings checked up to Nov 13, 2026 · Where the facts come from

The 12 closest to Letta

  1. Mem0

    Memory layer that lets AI agents remember across sessions

    • Mem0 is self-hostable, according to its own site.
    • Letta also covers workflow automation.
    Mem0 vs LettaMem0 pricing and details

  2. OpenHands

    Open-source platform for AI coding agents and automations

    • OpenHands starts at $500 per month for up to 10 users. Letta starts at $20 per month.
    • OpenHands is self-hostable, according to its own site.
    OpenHands vs LettaOpenHands pricing and details

  3. Hermes Agent

    Open-source AI agent with persistent memory and a messaging gateway

    • Hermes Agent starts at $20 per month for the optional Nous Portal Plus tier; the agent is free. Letta starts at $20 per month.
    • Only Hermes Agent lists macOS, Windows and Linux apps.
    • Hermes Agent is self-hostable, according to its own site.
    • Hermes Agent also covers chat assistant.
    Hermes Agent vs LettaHermes Agent pricing and details

  4. Mastra

    TypeScript framework for building and running AI agents

    • Mastra starts at $25 per workspace / month. Letta starts at $20 per month.
    • Mastra is self-hostable, according to its own site.
    Mastra vs LettaMastra pricing and details

  5. AutoGPT

    Open-source agent platform with a hosted team of AI Experts

    • AutoGPT starts at $42.50 per month, billed yearly at $510 (Pro); $50 billed monthly. Letta starts at $20 per month.
    • AutoGPT is self-hostable, according to its own site.
    AutoGPT pricing and details

  6. Dify

    Open-source platform for building AI agents and agentic workflows

    • Dify starts at $590 per workspace / year (Professional); $59 billed monthly. Letta starts at $20 per month.
    • Dify is self-hostable, according to its own site.
    • Dify also covers no-code.
    Dify pricing and details

  7. Kortix

    Open-source platform for running AI agents from a git repo you own

    • Kortix starts at $50 per month for 5,000 credits (Credits), with unlimited members. Letta starts at $20 per month.
    • Only Kortix lists macOS, Windows, Linux, iOS and Android apps.
    • Kortix is self-hostable, according to its own site.
    Kortix pricing and details

  8. Sim

    Open-source workspace for building and running AI agents

    • Sim starts at $21.25 per user / month, billed annually ($255); $25 billed monthly. Letta starts at $20 per month.
    • Only Sim lists a macOS app.
    • Sim is self-hostable, according to its own site.
    Sim pricing and details

  9. Agenta

    Open-source workspace for building team AI agents and automations

    • Agenta starts at $29 per month (Pro, unlimited users, 10,000 agent runs included). Letta starts at $20 per month.
    • Agenta is self-hostable, according to its own site.
    • Agenta also covers templates and no-code.
    Agenta pricing and details

  10. Sema4.ai

    Governed workspace for enterprise agents, projects and workflows

    • Letta has a free plan. Sema4.ai does not.
    • Sema4.ai is self-hostable, according to its own site.
    • Letta is open source, according to its own site.
    Sema4.ai pricing and details

  11. Kindo

    Control center for governing and metering enterprise AI agents

    • Letta has a free plan. Kindo does not.
    • Kindo is self-hostable, according to its own site.
    • Letta is open source, according to its own site.
    Kindo pricing and details

  12. OpenClaw

    Open-source personal AI agent you run yourself and message in chat

    • OpenClaw is free. Letta starts at $20 per month.
    • Only OpenClaw lists macOS, Windows, Linux, iOS and Android apps.
    • OpenClaw is self-hostable, according to its own site.
    • OpenClaw also covers chat assistant.
    OpenClaw pricing and details

16 more that can be self-hosted

All 28 in one table

Common questions

Is there a self-hosted alternative to Letta?

Yes. Mem0, OpenHands, Hermes Agent, Mastra, AutoGPT, Dify, Kortix, Sim and 20 more can be self-hosted, according to their own sites.

Can Letta be self-hosted?

The Letta listing does not say it can be self-hosted. The listing was checked on Nov 12, 2026 against the pages it cites.

Which of these AI agents are free?

Mem0, OpenHands, Hermes Agent, Mastra, AutoGPT, Dify, Kortix, Sim and 17 more are free or have a free plan.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Letta: the alternatives its listing names first, then the tools that share the most features with it.