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What is LangMem?

LangMem is a flexible and efficient Python SDK created by LangChain that equips AI agents with the capability to sustain long-term memory. This functionality allows agents to collect, retain, alter, and retrieve essential information from past interactions, thereby improving their intelligence and personalizing user experiences over time. The SDK offers three unique types of memory, along with tools for real-time memory management and background mechanisms for seamless updates outside of user engagement periods. Thanks to its storage-agnostic core API, LangMem can easily connect with a variety of backends and includes native compatibility with LangGraph’s long-term memory store, which simplifies type-safe memory consolidation through Pydantic-defined schemas. Developers can effortlessly integrate memory features into their agents using simple primitives, enabling smooth processes for memory creation, retrieval, and optimization of prompts during dialogue. This adaptability and user-friendly design establish LangMem as an essential resource for augmenting the functionality of AI-powered applications, ultimately leading to more intelligent and responsive systems. Moreover, its capability to facilitate dynamic memory updates ensures that AI interactions remain relevant and context-aware, further enhancing the user experience.

What is EverOS?

EverOS is a persistent memory platform for AI agents that combines long-term context, multimodal ingestion, self-evolving skills, and cross-platform compatibility. The system is designed to sit inside an existing agent loop and retrieve relevant context before each large language model call. Rather than sending an entire conversation or knowledge history into the model every time, EverOS selects the most relevant stored memories for the current task. Its memory architecture is built to support low-latency retrieval while reducing token usage and maintaining continuity across sessions. EverOS also introduces self-evolving skills, which turn successful task executions into cases that can later be consolidated into reusable procedural knowledge. Repeated successful patterns can be promoted into shared skills that are available to multiple agents without requiring manual curation or brittle workflow logic. The platform accepts multimodal sources including PDFs, images, spreadsheets, documents, slides, URLs, and Markdown and automatically parses, chunks, and indexes them for retrieval. EverOS works with agent environments and interfaces such as Claude Code, Codex, OpenClaw, Hermes, MCP, and OpenAI- and Anthropic-compatible SDKs. Its Markdown-first portability model allows organizations to export memories in a readable, version-controllable format and move between hosted and self-managed deployments. Teams can start with EverOS Cloud or deploy the Apache 2.0 open source version on their own infrastructure using the same API and memory format. EverOS is designed for developers, AI infrastructure teams, and enterprises that want agents to retain context, learn reusable procedures, and operate more efficiently across tools and environments. EverOS achieves 93.05% on the LoCoMo long-term memory benchmark (research: arXiv:2601.02163).

Media

Media

Integrations Supported

LangGraph
PydanticAI
Python

Integrations Supported

Tanka

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided

Pricing Information

Free
Free: $0/month. 3 Memory Spaces, 50,000 MCU/month, 100,000 Retrieval API calls/month.
Pro: $25/month (free during Early Access). 8 Memory Spaces, 250,000 MCU/month, 500,000 Retrieval API calls/month, includes Self-Evolving Skills.
Enterprise: Custom pricing. Custom limits, dedicated account manager, private deployment available.
Free Version

Supported Platforms

SaaS

Supported Platforms

SaaS
On-Prem

Customer Service / Support

Standard Support
Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub
On-Site Training

Training Options

Documentation Hub

Company Facts

Organization Name

LangChain

Date Founded

2022

Company Location

United States

Company Website

langchain-ai.github.io/langmem/

Company Facts

Organization Name

EverMind

Date Founded

2025

Company Location

United States

Company Website

evermind.ai/everos

Categories and Features

AI Memory Layers

Not specified

Categories and Features

AI Memory Layers

Not specified

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