LangMemLangChain
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Related Products
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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.
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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.
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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
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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
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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
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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.
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Support
Phone Support
Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Supported
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API
Offers API
Supported
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Screenshots and Videos |
Screenshots and VideosNo images available
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Pricing
No information available.
Free Version
Not Supported
Free Trial
Not Supported
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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
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
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In Person
Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationLangChain
Founded: 2022
United States
langchain-ai.github.io/langmem/
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Company Informationpast.dev
Founded: 2025
United States
past.dev/
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Categories |
Categories |
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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
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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
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