Free plan available

EverMemOS

Open-source memory infrastructure for persistent, long-context AI agents.

Visitevermind.ai
Intro

What is EverMemOS?

EverMind is a pioneering AI memory infrastructure company that empowers intelligent agents with continuous, near-infinite context and a long-term persistent identity. By providing systems like EverMemOS—an open-source memory operating system built to move beyond simple data retrieval—EverMind AI enables next-generation AI models to actively reason with context, grow with experience, and evolve into true personalized partners. Designed as the data infra for creating advanced AI applications, EverMind addresses the limitations of traditional, stateless tools, making it easier to build your AI agent team (打造你的 ai agent 团队) with deep, parametric long-context understanding.

EverMemOS at a glance
Free open-source core, contact for waitlist features23K monthly visitsHas free access
Pricing

EverMemOS Pricing Plans

Compare EverMemOS free options, EverMemOS paid pricing plans, and usage notes before you choose the best way to use this AI tool in 2026.

Free open-source core, contact for waitlist features

Pricing updated:Jun 12, 2026

Features

EverMemOS AI Features

Four-Layer Brain-Inspired Architecture (Agentic, Memory, Index, and API/MCP Interface layers)Hierarchical Memory Extraction into contextual MemUnits and structured memory graphsEverMemModel Core Engine for parametric long-context understanding utilizing the KV cacheExtensible Modular Memory Framework adapting to both professional tasks and empathetic companion AIHigh-performance retrieval and ranking capabilities powered by the EverMemReRank module
Pros & Cons

EverMemOS Pros and Cons

Pros

  • Achieves State-of-the-Art (SOTA) performance on major memory benchmarks like LoCoMo and LongMemEval-S
  • Open-source foundation allowing flexible, community-driven customization via GitHub
  • Moves beyond rigid text similarity database lookups to active contextual reasoning and fusion
  • Supports end-to-end training and seamless ingestion of entire databases at once

Limitations

  • Advanced enterprise features or specific production tiers currently require joining a waitlist
  • Requires complex integration as a foundational data infrastructure rather than a plug-and-play end-user app

EverMemOS FAQ

EverMemOS functions as an intelligent memory application processor rather than a simple database. On the LoCoMo reasoning accuracy evaluation (via LLM-Judge), it achieved an outstanding score of 92.3% by employing active reasoning, hierarchical memory extraction, and fusion mechanisms that continually inform the model's thinking.