LangMem

LangMem

LangChain
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+

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About

LangMem is a lightweight, flexible Python SDK from LangChain that equips AI agents with long-term memory capabilities, enabling them to extract, store, update, and retrieve meaningful information from past interactions to become smarter and more personalized over time. It supports three memory types and offers both hot-path tools for real-time memory management and background consolidation for efficient updates beyond active sessions. Through a storage-agnostic core API, LangMem integrates seamlessly with any backend and offers native compatibility with LangGraph’s long-term memory store, while also allowing type-safe memory consolidation using schemas defined in Pydantic. Developers can incorporate memory tools into agents using simple primitives to enable seamless memory creation, retrieval, and prompt optimization within conversational flows.

About

Weaviate is an open-source, AI-native vector database for building search, RAG, and agentic AI applications. Store data objects alongside vector embeddings from your favorite ML models and scale seamlessly into billions of objects. Bring your own vectors or use built-in vectorization, then combine vector, keyword, and hybrid search for state-of-the-art results, even with filters. Pipe results through leading LLMs to power next-generation, retrieval-augmented experiences. Weaviate goes beyond the database: the Query Agent turns natural language into precise, cited queries, Engram provides managed memory for AI agents, and Weaviate Embeddings handles vectorization for you. Run it yourself under an open-source license, or use fully managed Weaviate Cloud on AWS, GCP, or Azure, with SOC 2 Type II compliance, multi-tenancy, and RBAC built in. Use any generative model with your own data to build chatbots, semantic search, recommendation, and agentic workflows.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

AI developers and data scientists who build LangChain-based agents and want to implement long-term, structured memory to enhance personalization, coherence, and conversational depth

Audience

Developers and AI teams building search, RAG, and agentic AI applications

Support

Phone Support Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Pricing

Free
Open source (free); free Weaviate Cloud tier; paid Cloud plans from $45/mo.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Supported

Training

Documentation Supported
Webinars Supported
Live Online Not Supported
In Person Not Supported

Company Information

LangChain
Founded: 2022
United States
langchain-ai.github.io/langmem/

Company Information

Weaviate
Founded: 2019
The Netherlands
weaviate.io

Alternatives

Alternatives

Membase

Membase

Unibase
Embeddinghub

Embeddinghub

Featureform
EverOS

EverOS

EverMind

Categories

AI Memory Layers Supported

Categories

AI Memory Layers Supported
Vector Databases Supported

Integrations

Agno Not Supported
Amazon Web Services (AWS) Not Supported
Anyscale Not Supported
Boomi Not Supported
Claude Code Not Supported
Context Data Not Supported
Dify Not Supported
DigitalOcean Not Supported
Firecrawl Not Supported
Gemini CLI Not Supported
GitHub Not Supported
Grok Not Supported
Haystack Not Supported
Hugging Face Not Supported
LangChain Not Supported
LangGraph Supported
Ollama Not Supported
Semantic Kernel Not Supported
Unstructured Not Supported
n8n Not Supported

Integrations

Agno Supported
Amazon Web Services (AWS) Supported
Anyscale Supported
Boomi Supported
Claude Code Supported
Context Data Supported
Dify Supported
DigitalOcean Supported
Firecrawl Supported
Gemini CLI Supported
GitHub Supported
Grok Supported
Haystack Supported
Hugging Face Supported
LangChain Supported
LangGraph Not Supported
Ollama Supported
Semantic Kernel Supported
Unstructured Supported
n8n Supported
Claim LangMem and update features and information
Claim LangMem and update features and information
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Claim Weaviate and update features and information