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Mem0

Open source · OSI-approvedStatus: unknownNew

Open-source memory layer for AI agents and apps

Mem0 is an open-source memory layer that gives AI agents and applications persistent memory across sessions. It distills conversations into stored facts and retrieves the relevant ones at query time, serving developers who ship assistants, copilots, and workflow agents that must remember users instead of starting every chat from a blank slate. Teams choose between a self-hosted open-source edition and a managed platform with a dashboard, usage quotas, and governance controls. Where a plain model call forgets everything the moment the request ends, a Mem0-backed agent resumes with user facts, preferences, and history already in place, which is the difference that decides whether the layer fits.[1][2]

Quick verdict

Teams shipping assistants that must remember people across conversations benefit most from Mem0. Its documented strength is the drop-in memory loop: add messages, and the layer extracts facts, links entities, and returns scoped recall through Python and JavaScript SDKs or REST. The material constraint is the edition split: graph memory, consolidation, and governance live only on the paid platform, and self-hosting means provisioning a vector database, language model, and embedder yourself, so infrastructure-light or non-technical teams should look elsewhere. If your developers can self-host the open-source edition or accept platform pricing starting at $19 per month, choose Mem0 for agent recall; if you need no-code agent building, choose a simpler visual platform instead.[1][2][3][4]

Key features

  • Add, search, and update memory loop Send messages to store facts, then search, fetch, update, or delete them per memory, with per-memory history on both editions. Agents read and revise stored context through the same calls instead of rebuilding session state by hand.[1][2]

  • Entity scoping by user, agent, app, and run Memories separate along user, agent, and run identifiers, with app-level tenancy on the platform, so one deployment can serve many end users without leaking context. Multi-tenant products keep each user's recall isolated by construction.[1][2]

  • Graph memory on the platform The managed edition keeps an entity graph over extracted memories and feeds those connections into ranking, which surfaces related facts plain similarity might miss. Open source still extracts entities for ranking boosts but no longer ships a queryable graph.[1][2]

  • Dream memory consolidation A platform capability that consolidates memories over time, keeping long-lived recall current as facts change. Agents that run for months accumulate cleaner context instead of stale duplicates.[1][2]

  • Memory decay and expiration Opt-in decay reinforces recently used memories while dampening stale ones at search time, and per-memory expiration dates bound how long a fact lives. Teams shape recall freshness without manual pruning jobs.[1][2]

  • Python and JavaScript SDKs plus REST Both editions expose the same core operations through two SDKs and a REST API, with the homepage quickstart saving and searching a memory in a few lines. Existing codebases adopt recall without changing agent frameworks.[1][2]

  • MCP and framework integrations Model Context Protocol support plus documented integrations with agent frameworks connect memory to coding agents and orchestration stacks. Teams wire recall into the tools agents already use rather than building adapters.[1][2]

  • Enterprise governance on the platform Audit logs, workspace governance, SSO, on-prem deployment, and SLA support ship on the enterprise plan, with SOC 2 Type 1, HIPAA, and GDPR compliance stated on the site. Regulated deployments get the paper trail procurement asks for.[1][2]

Who will love it

  • A few SDK lines store and retrieve memories through the same add and search calls, so teams keep their framework and gain cross-session context. The quickstart path reaches a first memory in minutes on either edition.[1][2]

  • The Apache-2.0 open-source edition with pip install and swappable vector database, model, and embedder gives full data control to teams that already run their own infrastructure. Memory stores stay inside the team's own boundary.[1][2]

  • Platform audit logs, workspace governance, SSO, on-prem deployment, and stated compliance coverage answer the controls that regulated rollouts require. Procurement gets a managed path with a documented paper trail.[1][2]

Who should avoid it

  • The documented path is SDKs, REST, and server setup; no verified no-code builder exists, so visual-first teams will stall. Every customization assumes someone on the team writes code.[1][2]

  • Graph memory and Dream consolidation are platform-only paid capabilities, and the Hobby free tier caps retrievals at 1,000 per month, so free-tier or self-hosted users plan around that boundary. Check the live pricing page before committing recall-heavy workloads.[1][2]

  • If the task fits one stateless call, running a memory layer adds moving parts without a matching payoff. A direct model API call stays cheaper and simpler there.[1]

Compatibility and requirements

Self-hosting starts from pip install mem0ai with Python 3.10 or higher and a configured language model; local defaults wire Qdrant on disk with SQLite history.[1]

Python and JavaScript SDKs plus a REST API cover the documented integration surfaces; no other language SDK was verified in the sources read.[1][2]

Production self-hosting means provisioning a vector database, language model, and embedder; the Mem0 Platform is the managed alternative with quotas from the free Hobby tier to custom Enterprise.[1][2]

Questions worth asking

What is the best Mem0 alternative for non-technical users?

A visual no-code agent builder fits better, because Mem0's documented path assumes SDKs, REST, and server setup that non-developers cannot operate alone. For developer teams needing memory-first agents with a published catalogue record, the competitor Letta covers the same substitutable workflow of persistent agent recall.[1][2]

Is Mem0 really no-code?

No evidence supports a no-code claim. The documented surfaces are Python and JavaScript SDKs, a REST API, and a self-hosted server, all of which assume developer work.[1][2]

How much does Mem0 cost per month?

The managed platform charges in USD per month as checked in October 2026: Hobby is free with 10,000 add and 1,000 retrieval requests, Starter is $19 with 50,000 adds and 5,000 retrievals, and Pro is $249 with 500,000 adds, 50,000 retrievals, graph memory, and Dream consolidation. Enterprise is custom pricing with SSO, audit logs, on-prem deployment, and SLA support. The open-source edition carries no license fee beyond self-hosting costs.[1]

Can you self-host Mem0?

Yes. The Apache-2.0 open-source edition installs from pip with local Qdrant and SQLite defaults, and the platform-vs-OSS guide documents running it on operator infrastructure with a chosen vector database, language model, and embedder.[1][2]

Sources and editorial review

Source research. Reviewed on October 11, 2026. Written by Sanjib Sah. AI assisted; reviewed by a human editor.

We have not run or tested this product.

  1. Mem0 homepage

    official · Observed October 11, 2026

    Memory-layer positioning, add/learn/retrieve loop, SDK quickstart, enterprise governance claims, repository link.

  2. Mem0 pricing

    official · Observed October 11, 2026

    Plan prices, quotas, graph memory and Dream boundaries, enterprise SSO/audit/on-prem, usage-based option.

  3. Mem0 platform overview

    official · Observed October 11, 2026

    Managed pipeline, entity scoping, webhooks, multimodal, governance.

  4. Mem0 platform vs open source

    official · Observed October 11, 2026

    Edition comparison, self-host responsibilities, platform-only capabilities, SDK and REST parity.

  5. Mem0 open-source quickstart

    official · Observed October 11, 2026

    pip install, local defaults (Qdrant, SQLite), add/search by user_id, configuration surfaces.

  6. mem0ai/mem0 on GitHub

    official · Observed October 11, 2026

    Repository identity and release history.

  7. mem0ai/mem0 LICENSE

    official · Observed October 11, 2026

    Apache-2.0 license text.

  8. Catalogue record: letta

    official · Observed October 11, 2026

    Published letta catalogue record used for the competitor inference.

Compared with these products

No explicit proprietary baseline is recorded.

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