mem0ai/mem0

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<a href="https://github.com/mem0ai/mem0"> <img src="docs/images/banner-sm.png" width="800px" alt="Mem0 - The Memory Layer for Personalized AI"> </a> <a href="https://luma.com/mem0-oxfm"> <img src="docs/images/halloween-happy-hour.png" width="450px" alt="Mem0 OSS Halloween Happy Hour: The People Who Read the Source. Tuesday, Oct 27, 5:00 PM, San Francisco. Costumes encouraged."> </a> <a href="https://luma.com/mem0-oxfm">🎃 Register here →</a> · Contributors get priority <a href="https://trendshift.io/repositories/11194" target="blank"> <img src="https://trendshift.io/api/badge/repositories/11194" alt="mem0ai%2Fmem0 | Trendshift" width="250" height="55"/> </a> <a href="https://mem0.ai">Learn more</a> · <a href="https://mem0.dev/DiG">Join Discord</a> · <a href="https://mem0.dev/demo">Demo</a> <a href="https://mem0.dev/DiG"> <img src="https://img.shields.io/badge/Discord-%235865F2.svg?&logo=discord&logoColor=white" alt="Mem0 Discord"> </a> <a href="https://pepy.tech/project/mem0ai"> <img src="https://img.shields.io/pypi/dm/mem0ai" alt="Mem0 PyPI - Downloads"> </a> <a href="https://github.com/mem0ai/mem0"> <img src="https://img.shields.io/github/commit-activity/m/mem0ai/mem0?style=flat-square" alt="GitHub commit activity"> </a> <a href="https://pypi.org/project/mem0ai" target="blank"> <img src="https://img.shields.io/pypi/v/mem0ai?color=%2334D058&label=pypi%20package" alt="Package version"> </a> <a href="https://www.npmjs.com/package/mem0ai" target="blank"> <img src="https://img.shields.io/npm/v/mem0ai" alt="Npm package"> </a> <a href="https://www.ycombinator.com/companies/mem0"> <img src="https://img.shields.io/badge/Y%20Combinator-S24-orange?style=flat-square" alt="Y Combinator S24"> </a> <a href="https://mem0.ai/research">📄 Benchmarking Mem0's token-efficient memory algorithm →</a> ## New Memory Algorithm (April 2026) | Benchmark | Old | New | Tokens | Latency p50 | | --- | --- | --- | --- | --- | | **LoCoMo** | 71.4 | **92.5** | 7.0K | 0.88s | | **LongMemEval** | 67.8 | **94.4** | 6.8K | 1.09s | | **BEAM (1M)** | — | **64.1** | 6.7K | 1.00s | | **BEAM (10M)** | — | **48.6** | 6.9K | 1.05s | All benchmarks run on the same production-representative model stack. Single-pass retrieval (one call, no agentic loops) at a top_200 retrieval budget. Scores reflect Mem0's managed platform, which includes proprietary optimizations not available in the open-source SDK; open-source users should expect directionally similar gains but not identical numbers. **What changed:** - **Single-pass ADD-only extraction** -- one LLM call, no UPDATE/DELETE. Memories accumulate; nothing is overwritten. - **Agent-generated facts are first-class** -- when an agent confirms an action, that information is now stored with equal weight. - **Entity linking** -- entities are extracted, embedded, and linked across memories for retrieval boosting. - **Multi-signal retrieval** -- semantic, BM25 keyword, and entity matching scored in parallel and fused. - **Temporal Reasoning** -- time-aware retrieval that ranks the right dated instance for queries about current state, past events, and upcoming plans. See the [migration guide](https://docs.mem0.ai/migration/oss-v2-to-v3) for upgrade instructions. The [evaluation framework](https://github.com/mem0ai/memory-benchmarks) is open-sourced so anyone can reproduce the numbers. ## Research Highlights - **92.5 on LoCoMo** -- +21 points over the previous algorithm - **94.4 on LongMemEval** -- +27 points, with 98.2 on assistant memory recall - **64.1 on BEAM (1M)** -- production-scale memory evaluation at 1M tokens - [Read the full paper](https://mem0.ai/research) # Introduction [Mem0](https://mem0.ai) ("mem-zero") enhances AI assistants and agents with an intelligent memory layer, enabling personalized AI interactions. It remembers user preferences, adapts to individual needs, and continuously learns over time—ideal for customer support chatbots, AI assistants, and autonomous systems. ### Key Features & Use Cases **Core Capabilities:** - **Multi-Level Memory**: Seamlessly retains User, Session, and Agent state with adaptive personalization - **Developer-Friendly**: Intuitive API, cross-platform SDKs, and a fully managed service option **Applications:** - **AI Assistants**: Consistent, context-rich conversations - **Customer Support**: Recall past tickets and user history for tailored help - **Healthcare**: Track patient preferences and history for personalized care - **Productivity & Gaming**: Adaptive workflows and environments based on user behavior ## 🚀 Quickstart Guide <a name="quickstart"></a> ### Sign up as an agent AI agents can mint a working Mem0 API key in under five seconds — no email, no dashboard, no OTP. Four commands end-to-end: ```bash # 1. Install npm install -g @mem0/cli # or: pip install mem0-cli # 2. Sign up as an agent (replace `claude-code` with your name) mem0 init --agent --agent-caller claude-code # 3. Add a memory mem0 add "I am using mem0" # 4. Search mem0 search "am I using mem0" ``` The human owner can claim the account later with `mem0 init --email <their-email>` — same key, memories preserved. Full guide: [Sign up as an agent](https://docs.mem0.ai/platform/agent-signup). | | Library | Self-Hosted Server | Cloud Platform | |---|---------|-------------------|----------------| | **Best for** | Testing, prototyping | Teams running on their own infrastructure | Zero-ops production use | | **Setup** | `pip install mem0ai` | `docker compose up` | Sign up at [app.mem0.ai](https://app.mem0.ai?utm_source=oss&utm_medium=readme) | | **Dashboard** | -- | [Yes](https://docs.mem0.ai/open-source/setup) | Yes | | **Auth & API Keys** | -- | Yes | Yes | | **Advanced Features** | -- | Teasers | All included | Just testing? Use the library. Building for a team? Self-hosted. Want zero ops? Cloud. ### Library (pip / npm) ```bash pip install mem0ai ``` For enhanced hybrid search with BM25 keyword matching and entity extraction, install with NLP support: ```bash pip install mem0ai[nlp] python -m spacy download en_core_web_sm ``` Install sdk via npm: ```bash npm install mem0ai ``` ### Self-Hosted Server > **Note:** Self-hosted auth is on by default. Upgrading from a pre-auth build? Set `ADMIN_API_KEY`, register an admin through the wizard, or `AUTH_DISABLED=true` for local dev only. See [upgrade notes](https://docs.mem0.ai/open-source/setup#upgrade-notes). ```bash # Recommended: one command — start the stack, create an admin, issue the first API key. cd server && make bootstrap # Manual: start the stack and finish setup via the browser wizard. cd server && docker compose up -d # http://localhost:3000 ``` See the [self-hosted docs](https://docs.mem0.ai/open-source/overview) for configuration. ### Cloud Platform 1. Sign up on [Mem0 Platform](https://app.mem0.ai?utm_source=oss&utm_medium=readme) 2. Embed the memory layer via SDK or API keys 3. Using hosted Qdrant vectors? See the [Platform migration guide](https://docs.mem0.ai/migration/oss-to-platform) to import them into Mem0 Platform. ### CLI Manage memories from your terminal: ```bash npm install -g @mem0/cli # or: pip install mem0-cli mem0 init mem0 add "Prefers dark mode and vim keybindings" --user-id alice mem0 search "What does Alice prefer?" --user-id alice ``` See the [CLI documentation](https://docs.mem0.ai/platform/cli) for the full command reference. ### Agent Skills Teach your AI coding assistant (Claude Code, Codex, Cursor, Windsurf, OpenCode, OpenClaw, and any tool that supports the skills standard) how to build with Mem0. Two categories: **Reference skills — always on** (SDK knowledge loaded into the assistant's context): ```bash npx skills add https://github.com/mem0ai/mem0 --skill mem0 npx skills add https://github.com/mem0ai/mem0 --skill mem0-cli npx skills add https://github.com/mem0ai/mem0 --skill mem0-vercel-ai-sdk ``` **Pipeline skills — run on demand** (execute an end-to-end workflow in an existing repo): ```bash npx skills add https://github.com/mem0ai/mem0 --skill mem0-integrate npx skills add https://github.com/mem0ai/mem0 --skill mem0-test-integration npx skills add https://github.com/mem0ai/mem0 --skill mem0-oss-to-platform ``` Use `/mem0-integrate` to wire Mem0 into an existing repo via a test-first pipeline, then `/mem0-test-integration` to verify. Use `/mem0-oss-to-platform` to migrate an existing project from Mem0 OSS to the hosted Platform SDK. See the [skills catalog](./skills/) or [Vibecoding with Mem0](https://docs.mem0.ai/vibecoding) for the full picture. ### Basic Usage Mem0 requires an LLM to function, with `gpt-5-mini` from OpenAI as the default. However, it supports a variety of LLMs; for details, refer to our [Supported LLMs documentation](https://docs.mem0.ai/components/llms/overview). Mem0 uses `text-embedding-3-small` from OpenAI as the default embedding model. For best results with hybrid search (semantic + keyword + entity boosting), we recommend using at least [Qwen 600M](https://huggingface.co/Alibaba-NLP/gte-Qwen2-1.5B-instruct) or a comparable embedding model. See [Supported Embeddings](https://docs.mem0.ai/components/embedders/overview) for configuration details. First step is to instantiate the memory: ```python from openai import OpenAI from mem0 import Memory openai_client = OpenAI() memory = Memory() def chat_with_memories(message: str, user_id: str = "default_user") -> str: # Retrieve relevant memories relevant_memories = memory.search(query=message, filters={"user_id": user_id}, top_k=3) memories_str = "\n".join(f"- {entry['memory']}" for entry in relevant_memories["results"]) # Generate Assistant response system_prompt = f"You are a helpful AI. Answer the question based on query and memories.\nUser Memories:\n{memories_str}" messages = [{"role": "system", "content": system_prompt}, {"role": "user", "content": message}] response = openai_client.chat.completions.create(model="gpt-5-mini", messages=messages) assistant_response = response.choices[0].message.content # Create new memories from the conversation messages.append({"role": "assistant", "content": assistant_response}) memory.add(messages, user_id=user_id) return assistant_response def main(): print("Chat with AI (type 'exit' to quit)") while True: user_input = input("You: ").strip() if user_input.lower() == 'exit': print("Goodbye!") break print(f"AI: {chat_with_memories(user_input)}") if __name__ == "__main__": main() ``` For detailed integration steps, see the [Quickstart](https://docs.mem0.ai/quickstart) and [API Reference](https://docs.mem0.ai/api-reference). ## 🔗 Integrations & Demos - **ChatGPT with Memory**: Personalized chat powered by Mem0 ([Live Demo](https://mem0.dev/demo)) - **Browser Extension**: Store memories across ChatGPT, Perplexity, and Claude ([Chrome Extension](https://chromewebstore.google.com/detail/onihkkbipkfeijkadecaafbgagkhglop?utm_source=item-share-cb)) - **Langgraph Support**: Build a customer bot with Langgraph + Mem0 ([Guide](https://docs.mem0.ai/integrations/langgraph)) - **CrewAI Integration**: Tailor CrewAI outputs with Mem0 ([Example](https://docs.mem0.ai/integrations/crewai)) ## 📚 Documentation & Support - Full docs: https://docs.mem0.ai - Community: [Discord](https://mem0.dev/DiG) · [X (formerly Twitter)](https://x.com/mem0ai) - Contact: founders@mem0.ai ## Citation We now have a paper you can cite: ```bibtex @article{mem0, title={Mem0: Building Production-Ready AI Agents with Scalable Long-Term Memory}, author={Chhikara, Prateek and Khant, Dev and Aryan, Saket and Singh, Taranjeet and Yadav, Deshraj}, journal={arXiv preprint arXiv:2504.19413}, year={2025} } ``` ## ⚖️ License Apache 2.0 — see the [LICENSE](https://github.com/mem0ai/mem0/blob/main/LICENSE) file for details.

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Mem0 CLI -- the command-line interface for mem0 memory operations. TRIGGER when: user mentions "mem0 cli", "mem0 command line", "@mem0/cli", "mem0-cli", "pip install mem0-cli", "npm install -g @mem0/cli", or is running mem0 commands in a terminal/shell (mem0…