mori
★ 32
vs
letta
★ 25.2k
mori vs letta
mori: Mori is a shared memory layer for AI coding agents that allows multiple instances to learn from each other, ensuring coherence and preventing 'cold starts'. It distills session activity into durable knowledge, enabling agents to start informed and benefit from collective intelligence.; letta: Letta is a powerful platform for building stateful AI agents equipped with advanced memory, enabling them to learn and self-improve over time. It provides both a command-line interface for local agent execution and a comprehensive API with Python and TypeScript SDKs for seamless integration into applications.
01
TL;DR
moriMemory & Context · ★ 32
Enabling AI coding agents across different machines or teams to share learned knowledge and maintain consistency.
lettaMemory & Context · ★ 25.2k
When to choose:
- You want a long-lived agent that remembers past work and rewrites its own memory and context over time.
- You want one agent reachable from CLI, desktop, browser, mobile and messaging apps, with subagents, schedules and hooks.
- You want memory you can inspect: the README says context is tracked in git and can sync to your own repository.
When to skip:
- You only need to add memory to an agent you already use through MCP; a small MCP memory server is a lighter fit.
- You rely on older Letta tutorials or the V1 API server: the project restructured, and the V1 server is retired.
- You want everything to work without signing in: Letta Cloud is the default backend and some features need it.
02
Side-by-Side Comparison
Field
morilettaCategory
Memory & Context
Memory & Context
Stars
★ 32
★ 25.2k
License
AGPL-3.0
Apache-2.0
Install Command
git clone https://github.com/fjwood69/mori.git && cd mori && cp deploy/homelab/.env.example deploy/homelab/.env && docker compose -f deploy/homelab/docker-compose.yml up -d
npm install -g @letta-ai/letta-code
Updated
3d ago
5d ago
Open Source
Yes
Yes
Tags
AI Agents, Shared Memory, Knowledge Base
Stateful AI, Agent Platform, Advanced Memory
03
Features
mori01Multi-Instance Coherence: Shared memory ensures all AI agent instances are informed by others' decisions.
02Dream Pipeline: Automatically distills session events into structured memories.
03Universal Ingestion: Feed various data types (PDFs, images, git history) into the memory store.
04Strategic Consultation: Provides LLM guidance grounded in project context and team standards.
05Inter-Agent Messaging: Enables agents to send tasks, questions, and decisions across the network.
letta01Build stateful AI agents with advanced memory
02Agents capable of learning and self-improvement over time
03CLI tool for running agents locally in your terminal
04Comprehensive API for integrating agents into applications
05Support for skills and subagents; fully model-agnostic
04
Use Cases
mori↳Enabling AI coding agents across different machines or teams to share learned knowledge and maintain consistency.
↳Onboarding new AI agents or team members by rapidly bootstrapping the memory store with existing project documentation and history.
↳Obtaining context-aware strategic advice and reviews (e.g., architecture, security) from LLMs based on project specifics.
↳Orchestrating complex tasks by delegating work and sharing decisions among multiple AI agent instances.
↳Persistent knowledge base for AI development projects, preventing repetitive learning and ensuring continuity.
letta↳Running AI agents locally in your terminal for coding and general tasks.
↳Integrating stateful AI agents into custom applications using the API and SDKs.
↳Developing self-improving AI systems that adapt and learn continually.
05
Best For
mori—
lettaMost PopularEssentialTrending
FAQ
FAQ
What is the difference between mori and letta?
Both mori and letta are in the Memory & Context category. mori has 32 stars, while letta has 25.2k stars.
Which is better, mori or letta?
The best choice depends on your use case. Choose mori if Enabling AI coding agents across different machines or teams to share learned knowledge and maintain consistency., and letta if Running AI agents locally in your terminal for coding and general tasks..
Is mori free or open source?
Yes, mori is open source on GitHub (AGPL-3.0).
Is letta free or open source?
Yes, letta is open source on GitHub (Apache-2.0).
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