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Best AI Tools for Building Agents With Long Term Memory

2 tools reviewed for building agents with long term memory, ranked by our editorial rating.

  1. 1
    Letta9.2/10

    Machines that learn

    freemiumFree tierFrom $20/mo
  2. 2
    Maximem7.4/10

    A unified memory vault that delivers consistent context across every AI chat and agent.

    freemiumFree tierFrom $19/mo

Frequently Asked Questions

What are the best AI tools for building agents with long term memory?▾

Letta, Maximem are the top-rated picks for building agents with long term memory based on our editorial reviews. The full ranked list is below with pricing and use-case fit for each.

Are there free AI tools for building agents with long term memory?▾

Yes. Letta, Maximem all offer free tiers, though feature limits vary. See each tool's page for current pricing details.

How did we pick these building agents with long term memory tools?▾

Each tool listed has a published editorial review on My AI Guide. We pick tools that real vibe builders use, verify pricing at review time, and rank by overall editor rating (1-10).