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Mem0 Review 2026 — Open-Source Persistent Memory Layer for AI Applications

Mem0 gives any LLM persistent memory across conversations. Open-source, vector + graph storage, works with OpenAI, Anthropic, Ollama. Free Apache 2.0 license.

Mem0 Review 2026 — Open-Source Persistent Memory Layer for AI Applications

Mem0 is a memory layer for AI agents and applications. It extracts durable facts from conversations, updates memories as information changes, and retrieves relevant context for later responses.

Developers use it for customer support, personal assistants, coding agents, healthcare workflows, education, and sales systems. Mem0 is infrastructure rather than a standalone chatbot or language model; hosted plans have request limits, while self-hosting and advanced enterprise features may require additional setup or cost.

Features

  • Stores and retrieves persistent memories across sessions and agents
  • Extracts durable facts and updates memories from conversations
  • Supports user, session, agent, and project memory scopes
  • Provides semantic, keyword, entity, and temporal retrieval
  • Offers graph memory for entity linking on Pro and Enterprise
  • Dream consolidates duplicates, outdated facts, and recurring behavior
  • Provides Python and Node.js SDKs, API access, and a CLI
  • Open-source SDK licensed under Apache 2.0

Use cases

  • Build support agents that remember customer history and preferences
  • Create assistants that retain context between conversations
  • Give coding agents memory of repositories, conventions, and prior decisions
  • Personalize tutoring with student progress and learning preferences
  • Track patient history and treatment preferences across visits
  • Maintain sales context across long customer relationships

Pros

    Cons

      Latest updates

      • Mem0 Python SDK (v2.2.0) (v2.2.0)

        Python SDK adds user profile methods to get, generate, configure, sample, and check profile jobs.

      • Mem0 Node SDK (v3.3.0) (v3.3.0)

        Node SDK adds user profile methods to get, generate, configure, sample, and check profile jobs.

      • Mem0 Python SDK (v2.1.0) (v2.1.0)

        Python SDK adds surface identity headers to requests, including source, application, and client stack.

      • Mem0 Node SDK (v3.2.0) (v3.2.0)

        Node SDK adds surface identity headers to requests, including source, application, and client stack.

      Capabilities

      • Command line — “Gateway CLI Trust Center” source
      • Self-hosted — “Kubernetes, private cloud, or air-gapped. Same API everywhere.” source
      • API — “API Reference” source
      • Official SDKs — “Install the SDK. Run this in your terminal (not in Python):” source
      • Search over your data — “Mem0 retrieves key memories as users interact” source

      Get it

      Security

      • SOC 2 — “SOC-2 Type 1” source
      • GDPR — “Compliance HIPAA SOC-2 Type 1 GDPR” source
      • HIPAA — “HIPAA Compliance Self-Attestation” source

      Pricing

      Starting price
      $19/mo
      Prices checked
      2026-11-05

      Free

      Free

      • Unlimited end users
      • First 30 days: 10,000 adds and 1,000 retrievals a month, model calls on us
      • With your own LLM key: 50,000 adds and 10,000 retrievals a month
      • Usage-based billing past your limits, with a monthly cap you set
      • Community support

      Custom

      Price on request

      • Everything in Free
      • Limits set to your volume
      • Graph memory (entity linking)
      • User profiles
      • Dream (memory consolidation)
      • Advanced analytics

      Hobby

      Free

        Starter

        • 19 USD

          Pro

          • 249 USD
            Official website