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What is past.dev?

Past.dev offers a memory API specifically tailored for developers working on AI agents and applications that require long-term memory features. This innovative service enables applications to submit text from a variety of sources, including conversations, emails, and documents, while extracting memories and providing ranked results alongside their original timestamps and excerpts. The API encompasses a range of functionalities, including ingestion, bulk ingestion, memory recall, deletion, project and identity management, along with audience-specific access controls and webhooks. Developers can choose to connect through JSON endpoints or secure servers using the Model Context Protocol, and they can also enhance their development experience with companion plugins that work seamlessly with tools such as Claude Code, Codex, Cursor, JetBrains IDEs, and Hermes Agent. Functioning as a managed cloud solution, the platform provides a user-friendly console for managing API keys, monitoring usage, and accessing request logs, as well as options for enterprise deployments on clients' AWS, Google Cloud, or Azure accounts. This robust platform is particularly advantageous for software teams aiming to weave enduring, source-based memory into their AI agents and applications, thereby significantly boosting functionality and user engagement. By facilitating more intelligent interactions and enhancing knowledge retention within AI-driven systems, past.dev ultimately transforms how developers approach memory integration in their projects. With its comprehensive features and user-centric design, it stands out as a vital resource for enhancing AI capabilities.

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.

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Media

Integrations Supported

Claude
Claude Code
Cursor
GitHub Copilot
Hermes Agent
JetBrains Junie
Model Context Protocol (MCP)
OpenAI Codex
Visual Studio Code

Integrations Supported

LangGraph
PydanticAI
Python

API Availability

Has API

API Availability

Has API

Pricing Information

$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

Pricing Information

Pricing not provided

Supported Platforms

SaaS
On-Prem

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Standard Support
Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub
On-Site Training

Company Facts

Organization Name

past.dev

Date Founded

2025

Company Location

United States

Company Website

past.dev/

Company Facts

Organization Name

LangChain

Date Founded

2022

Company Location

United States

Company Website

langchain-ai.github.io/langmem/

Categories and Features

AI Memory Layers

Not specified

Categories and Features

AI Memory Layers

Not specified

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