LangMem

LangMem

LangChain
+
+

Related Products

  • Apify
    1,800 Ratings
    Visit Website
  • Dragonfly
    16 Ratings
    Visit Website
  • NeuBird
    2 Ratings
    Visit Website
  • LM-Kit.NET
    29 Ratings
    Visit Website
  • Google Compute Engine
    1,169 Ratings
    Visit Website
  • RaimaDB
    12 Ratings
    Visit Website
  • Gemini Enterprise Agent Platform
    1,161 Ratings
    Visit Website
  • Air
    849 Ratings
    Visit Website
  • Bitdefender Ultimate Small Business Security
    5 Ratings
    Visit Website
  • Overmonitor
    8 Ratings
    Visit Website

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

past.dev is a long-term memory API for developers building AI agents and applications. Applications send timestamped text from conversations, email, meetings, support records, CRM notes, and documents; the service derives memories and returns ranked results with dates and excerpts from the source data. Its API supports ingestion, batch ingestion, recall, deletion, project and identity management, audience-based access controls, and webhooks. Developers can connect through JSON endpoints or authenticated Model Context Protocol servers, and install companion plugins for Claude Code, Codex, Cursor, JetBrains IDEs, and Hermes Agent. The managed cloud service offers a console for API keys, usage, and request logs; enterprise deployments can run in a customer's AWS, Google Cloud, or Azure account. It is aimed at software teams adding persistent, source-grounded memory to AI agents and other applications.

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 Not Supported
Mac Not Supported
Linux Not 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 product teams building AI agents or applications that need persistent, source-grounded memory, including teams integrating through an API, MCP, or coding-agent plugins.

Support

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

Support

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

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

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

Pricing

$99/month
Pay as you go is $0/month and starts with 150,000 credits, or 400,000 credits with a work email. Additional credits start at $30 for 100,000 credits. Flex is $99/month and includes 400,000 credits, unlimited recall, five projects, and 30-day credit rollover; additional credits start at $30 for 100,000 credits. Enterprise pricing is custom and starts at 5,000,000 credits per month.
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 Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

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

Company Information

past.dev
Founded: 2025
United States
past.dev/

Alternatives

Alternatives

Hindsight

Hindsight

Vectorize
Membase

Membase

Unibase
EverOS

EverOS

EverMind
EverOS

EverOS

EverMind
MemClaw

MemClaw

Caura AI

Categories

AI Memory Layers Supported

Categories

AI Memory Layers Supported

Integrations

Claude Not Supported
Claude Code Not Supported
Cursor Not Supported
GitHub Copilot Not Supported
Hermes Agent Not Supported
JetBrains Junie Not Supported
LangGraph Supported
Model Context Protocol (MCP) Not Supported
OpenAI Codex Not Supported
PydanticAI Supported
Python Supported
Visual Studio Code Not Supported

Integrations

Claude Supported
Claude Code Supported
Cursor Supported
GitHub Copilot Supported
Hermes Agent Supported
JetBrains Junie Supported
LangGraph Not Supported
Model Context Protocol (MCP) Supported
OpenAI Codex Supported
PydanticAI Not Supported
Python Not Supported
Visual Studio Code Supported
Claim LangMem and update features and information
Claim LangMem and update features and information
Claim past.dev and update features and information
Claim past.dev and update features and information