Overview - Mem0

Documentation Index

Fetch the complete documentation index at: /llms.txt

Use this file to discover all available pages before exploring further.

Mem0 Open Source is the same memory engine as the Platform, running on your own infrastructure. You own the stack, the data, and every component, and you choose where each one runs. Run it two ways:

As a library in your app. pip install mem0ai (or npm install mem0ai), call Memory(), and you have memory in a few lines.
As a self-hosted server. A Docker stack with a dashboard, per-user API keys, and a request audit log.

Get started

[**Python Quickstart**
Install the SDK and verify the add/search loop in a few lines.](https://docs.mem0.ai/open-source/python-quickstart)

[**Node.js Quickstart**
Install the TypeScript SDK and run the starter script.](https://docs.mem0.ai/open-source/node-quickstart)

[**Self-hosted server**
Run make bootstrap to launch the server, dashboard, and your first API key.](https://docs.mem0.ai/open-source/setup)

Go further

[**Configure components**
Set your LLM, embedder, vector store, and reranker.](https://docs.mem0.ai/open-source/configuration)

[**Self-hosting features**
Async memory, metadata filters, reranker search, multimodal, and more.](https://docs.mem0.ai/open-source/features/overview)

[**Build with cookbooks**
End-to-end examples: companions, agents, and integrations.](https://docs.mem0.ai/cookbooks/overview)

Need a managed alternative? Compare hosting models in the Platform vs OSS guide or switch tabs to the Platform documentation.

Default components

Mem0 runs out of the box with the defaults below. Override any of them through configuration. As a library (you import Mem0 and call Memory()):

Component	Default
LLM	OpenAI `gpt-5-mini` (set `OPENAI_API_KEY`)
Embeddings	OpenAI `text-embedding-3-small`
Vector store	Local Qdrant at `/tmp/qdrant`
History store	SQLite at `~/.mem0/history.db`
Reranker	Disabled until configured

Override any component with Memory.from_config. As a self-hosted server (the server/ Docker Compose stack):

Component	Default
LLM	OpenAI `gpt-5-mini` (override with `MEM0_DEFAULT_LLM_MODEL`)
Embeddings	OpenAI `text-embedding-3-small` (override with `MEM0_DEFAULT_EMBEDDER_MODEL`)
Vector store	Postgres + pgvector
Bundled providers	`openai`, `anthropic`, `gemini` (switch on the Configuration page)

See Self-Hosted Setup for the full provider list and how to extend it.

Using Mem0? Star us on GitHub to help more developers discover memory for AI apps.