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https://github.com/mem0ai/mem0

The Memory layer for your AI apps
https://github.com/mem0ai/mem0

agent ai aiagent application chatbots chatgpt embeddings llm long-term-memory memory memory-management python rag state-management vector-database

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The Memory layer for your AI apps

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README 

        


  

  Mem0 - The Memory Layer for Personalized AI

  

Launch



  


    Learn more

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    Join Discord

  





  

    Mem0 Discord

  

  

    Mem0 PyPI - Downloads

  

  

        Package version

    

    

        Npm package

    

  

    Y Combinator S24

  




# Introduction



[Mem0](https://mem0.ai) (pronounced as "mem-zero") enhances AI assistants and agents with an intelligent memory layer, enabling personalized AI interactions. Mem0 remembers user preferences, adapts to individual needs, and continuously improves over time, making it ideal for customer support chatbots, AI assistants, and autonomous systems.





  New Feature: Introducing Graph Memory. Check out our documentation.




### Core Features



- **Multi-Level Memory**: User, Session, and AI Agent memory retention

- **Adaptive Personalization**: Continuous improvement based on interactions

- **Developer-Friendly API**: Simple integration into various applications

- **Cross-Platform Consistency**: Uniform behavior across devices

- **Managed Service**: Hassle-free hosted solution



### How Mem0 works?



Mem0 leverages a hybrid database approach to manage and retrieve long-term memories for AI agents and assistants. Each memory is associated with a unique identifier, such as a user ID or agent ID, allowing Mem0 to organize and access memories specific to an individual or context.



When a message is added to the Mem0 using add()  method, the system extracts relevant facts and preferences and stores it across data stores: a vector database, a key-value database, and a graph database. This hybrid approach ensures that different types of information are stored in the most efficient manner, making subsequent searches quick and effective.



When an AI agent or LLM needs to recall memories, it uses the search() method. Mem0 then performs search across these data stores, retrieving relevant information from each source. This information is then passed through a scoring layer, which evaluates their importance based on relevance, importance, and recency. This ensures that only the most personalized and useful context is surfaced.



The retrieved memories can then be appended to the LLM's prompt as needed, enhancing the personalization and relevance of its responses.



### Use Cases



Mem0 empowers organizations and individuals to enhance:



- **AI Assistants and agents**: Seamless conversations with a touch of déjà vu

- **Personalized Learning**: Tailored content recommendations and progress tracking

- **Customer Support**: Context-aware assistance with user preference memory

- **Healthcare**: Patient history and treatment plan management

- **Virtual Companions**: Deeper user relationships through conversation memory

- **Productivity**: Streamlined workflows based on user habits and task history

- **Gaming**: Adaptive environments reflecting player choices and progress



## Get Started



The easiest way to set up Mem0 is through the managed [Mem0 Platform](https://app.mem0.ai). This hosted solution offers automatic updates, advanced analytics, and dedicated support. [Sign up](https://app.mem0.ai) to get started.



If you prefer to self-host, use the open-source Mem0 package. Follow the [installation instructions](#install) to get started.



## Installation Instructions 



Install the Mem0 package via pip:



```bash

pip install mem0ai

```



Alternatively, you can use Mem0 with one click on the hosted platform [here](https://app.mem0.ai/).



### Basic Usage



Mem0 requires an LLM to function, with `gpt-4o` from OpenAI as the default. However, it supports a variety of LLMs; for details, refer to our [Supported LLMs documentation](https://docs.mem0.ai/llms).



First step is to instantiate the memory:



```python

from mem0 import Memory



m = Memory()

```



How to set OPENAI_API_KEY



```python

import os

os.environ["OPENAI_API_KEY"] = "sk-xxx"

```



You can perform the following task on the memory:



1. Add: Store a memory from any unstructured text

2. Update: Update memory of a given memory_id

3. Search: Fetch memories based on a query

4. Get: Return memories for a certain user/agent/session

5. History: Describe how a memory has changed over time for a specific memory ID



```python

# 1. Add: Store a memory from any unstructured text

result = m.add("I am working on improving my tennis skills. Suggest some online courses.", user_id="alice", metadata={"category": "hobbies"})



# Created memory --> 'Improving her tennis skills.' and 'Looking for online suggestions.'

```



```python

# 2. Update: update the memory

result = m.update(memory_id=, data="Likes to play tennis on weekends")



# Updated memory --> 'Likes to play tennis on weekends.' and 'Looking for online suggestions.'

```



```python

# 3. Search: search related memories

related_memories = m.search(query="What are Alice's hobbies?", user_id="alice")



# Retrieved memory --> 'Likes to play tennis on weekends'

```



```python

# 4. Get all memories

all_memories = m.get_all()

memory_id = all_memories["memories"][0] ["id"] # get a memory_id



# All memory items --> 'Likes to play tennis on weekends.' and 'Looking for online suggestions.'

```



```python

# 5. Get memory history for a particular memory_id

history = m.history(memory_id=)



# Logs corresponding to memory_id_1 --> {'prev_value': 'Working on improving tennis skills and interested in online courses for tennis.', 'new_value': 'Likes to play tennis on weekends' }

```



> [!TIP]

> If you prefer a hosted version without the need to set up infrastructure yourself, check out the [Mem0 Platform](https://app.mem0.ai/) to get started in minutes.



### Graph Memory

To initialize Graph Memory you'll need to set up your configuration with graph store providers.

Currently, we support Neo4j as a graph store provider. You can setup [Neo4j](https://neo4j.com/) locally or use the hosted [Neo4j AuraDB](https://neo4j.com/product/auradb/). 

Moreover, you also need to set the version to `v1.1` (*prior versions are not supported*). 

Here's how you can do it:



```python

from mem0 import Memory



config = {

    "graph_store": {

        "provider": "neo4j",

        "config": {

            "url": "neo4j+s://xxx",

            "username": "neo4j",

            "password": "xxx"

        }

    },

    "version": "v1.1"

}



m = Memory.from_config(config_dict=config)



```



## Documentation



For detailed usage instructions and API reference, visit our documentation at [docs.mem0.ai](https://docs.mem0.ai). Here, you can find more information on both the open-source version and the hosted [Mem0 Platform](https://app.mem0.ai).



## Star History



[![Star History Chart](https://api.star-history.com/svg?repos=mem0ai/mem0&type=Date)](https://star-history.com/#mem0ai/mem0&Date)



## Support



Join our community for support and discussions. If you have any questions, feel free to reach out to us using one of the following methods:



- [Join our Discord](https://mem0.dev/DiG)

- [Follow us on Twitter](https://x.com/mem0ai)

- [Email founders](mailto:[email protected])



## Contributors



Join our [Discord community](https://mem0.dev/DiG) to learn about memory management for AI agents and LLMs, and connect with Mem0 users and contributors. Share your ideas, questions, or feedback in our [GitHub Issues](https://github.com/mem0ai/mem0/issues).



We value and appreciate the contributions of our community. Special thanks to our contributors for helping us improve Mem0.





  




## Anonymous Telemetry



We collect anonymous usage metrics to enhance our package's quality and user experience. This includes data like feature usage frequency and system info, but never personal details. The data helps us prioritize improvements and ensure compatibility. If you wish to opt-out, set the environment variable MEM0_TELEMETRY=false. We prioritize data security and don't share this data externally.



## License



This project is licensed under the Apache 2.0 License - see the [LICENSE](LICENSE) file for details.