AgentIndex icon
AgentIndex
Ori-Mnemos logo
Ori-Mnemos
★ 333
vs
overmind logo
overmind
★ 86

Ori-Mnemos vs overmind

Ori-Mnemos: Ori Mnemos is an open-source persistent memory infrastructure for AI agents that implements human cognition models on a knowledge graph. It uses ACT-R decay, spreading activation, and Hebbian learning to manage memory, and achieves state-of-the-art retrieval performance while being zero-infrastructure and portable.; overmind: Overmind is the first open-source event-driven AI agent cognitive architecture that serves as an external brain for Claude Code. It provides permanent memory, multi-window fleet collaboration, and pre-answer self-checking to eliminate hallucinations and rework.

01

TL;DR

Ori-Mnemos logo
Ori-MnemosMemory & Context · ★ 333

Multi-hop retrieval QA (e.g., HotpotQA)

Read Ori-Mnemos full review →
overmind logo
overmindMemory & Context · ★ 86

Avoid re-introducing projects across sessions

Read overmind full review →
02

Side-by-Side Comparison

Field
Ori-Mnemos logoOri-Mnemos
overmind logoovermind
Category
Memory & Context
Memory & Context
Stars
★ 333
★ 86
License
Apache-2.0
MIT
Install Command
npm install -g ori-memory && ori init my-agent && cd my-agent
git clone https://github.com/xuanlinAI/overmind.git && cd overmind && node install.js
Updated
3w ago
4mo ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
agent-memory, ai-agent, ai-agents
ai-agent, ai-memory, codex
03

Features

Ori-Mnemos logoOri-Mnemos
01Persistent memory across sessions, clients, and machines
02Knowledge graph with wiki-links, PageRank, and community detection
03Three memory spaces with cognitive forgetting (ACT-R decay)
04Four-signal fusion retrieval (semantic, BM25, PageRank, warmth)
05Retrieval intelligence with Q-learning and meta-learning
overmind logoovermind
01Event-driven 6-channel architecture
02Cross-session permanent memory
03Multi-agent fleet real-time collaboration
04Pre-answer self-check for hallucination prevention
05Knowledge graph with 5000+ nodes and 10 relation types
04

Use Cases

Ori-Mnemos logoOri-Mnemos
↳Multi-hop retrieval QA (e.g., HotpotQA)
↳Long-term conversational memory (e.g., LoCoMo)
↳Persistent AI agent identity and knowledge
overmind logoovermind
↳Avoid re-introducing projects across sessions
↳Run multiple Claude Code windows without conflicts
↳Catch hallucinated code before it reaches you
FAQ

FAQ

What is the difference between Ori-Mnemos and overmind?
Both Ori-Mnemos and overmind are in the Memory & Context category. Ori-Mnemos has 333 stars, while overmind has 86 stars.
Which is better, Ori-Mnemos or overmind?
The best choice depends on your use case. Choose Ori-Mnemos if Multi-hop retrieval QA (e.g., HotpotQA), and overmind if Avoid re-introducing projects across sessions.
Is Ori-Mnemos free or open source?
Yes, Ori-Mnemos is open source on GitHub (Apache-2.0).
Is overmind free or open source?
Yes, overmind is open source on GitHub (MIT).
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Related

Alternatives to Ori-Mnemos →Alternatives to overmind →Ori-Mnemos details →overmind details →