memo
★ 24
vs
letta
★ 25.2k
memo vs letta
memo: Memo provides a 100% local, persistent, and searchable memory solution for AI coding agents, eliminating amnesia across sessions. It uniquely offers token-efficient context management, historical querying, contradiction detection, and autonomous maintenance, saving costs and improving agent performance.; 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
memoMemory & Context · ★ 24
Providing continuous memory and context for AI coding agents across multiple sessions to prevent 'amnesia'.
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
memolettaCategory
Memory & Context
Memory & Context
Stars
★ 24
★ 25.2k
License
MIT
Apache-2.0
Install Command
curl -fsSL https://raw.githubusercontent.com/jagoff/memo/v4.9.0/install.sh | bash
npm install -g @letta-ai/letta-code
Updated
1d ago
5d ago
Open Source
Yes
Yes
Tags
AI Memory, Local-first, Coding Agent
Stateful AI, Agent Platform, Advanced Memory
03
Features
memo01100% local, persistent, and searchable memory for various AI coding agents (e.g., Claude Code, Cursor), requiring no cloud or external databases.
02Token-efficient context management designed to reduce overhead and save costs for AI interactions.
03Time-machine capability to query knowledge as it was at any historical point, aiding in understanding past decisions.
04Contradiction radar that detects and helps resolve conflicting facts within the knowledge corpus.
05Autonomous nightly maintenance pipeline to optimize memory, resolve conflicts, and pre-warm embeddings.
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
memo↳Providing continuous memory and context for AI coding agents across multiple sessions to prevent 'amnesia'.
↳Storing and retrieving important decisions, facts, or project-specific knowledge for AI agents.
↳Analyzing the evolution of project knowledge and understanding the rationale behind past decisions using historical queries.
↳Managing changing project requirements by detecting and resolving contradictions in stored knowledge.
↳Enhancing AI agent responses by injecting relevant, token-optimized memory before model answers.
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
memo—
lettaMost PopularEssentialTrending
FAQ
FAQ
What is the difference between memo and letta?
Both memo and letta are in the Memory & Context category. memo has 24 stars, while letta has 25.2k stars.
Which is better, memo or letta?
The best choice depends on your use case. Choose memo if Providing continuous memory and context for AI coding agents across multiple sessions to prevent 'amnesia'., and letta if Running AI agents locally in your terminal for coding and general tasks..
Is memo free or open source?
Yes, memo is open source on GitHub (MIT).
Is letta free or open source?
Yes, letta is open source on GitHub (Apache-2.0).
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