claude-soul
★ 81
vs
letta
★ 23.0k
claude-soul vs letta
claude-soul: Claude Soul gives Claude Code persistent memory across sessions, automatically tracks user corrections with lifecycle stages, and develops improved behavioral frameworks over time. It runs entirely locally using SQLite, integrates via MCP server and hooks, and requires no cloud or API keys.; 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
Choose claude-soul if…Maintain context and recall previous decisions across Claude Code sessions
Choose letta if…Running AI agents locally in your terminal for coding and general tasks.
02
Side-by-Side Comparison
03
Features
claude-soul01Cross-session memory with semantic search (local SQLite + optional Ollama embeddings)
02Automatic correction tracking with lifecycle stages (new → active → improving → internalized)
03Self-evolving judgment and framework optimization through reflection cycles
04Shadow analysis CLI to inspect behavioral patterns with trends
05Fully local, no cloud, no API key, no telemetry
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
claude-soul↳Maintain context and recall previous decisions across Claude Code sessions
↳Track and internalize corrections to improve Claude's behavior over time
↳Allow Claude to autonomously develop and refine working frameworks based on repeated successful patterns
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
claude-soulTrendingMemory & ContextDev Tooling
lettaMost PopularTrendingEssential
FAQ
FAQ
What is the difference between claude-soul and letta?
Both claude-soul and letta are in the Memory & Context category. claude-soul has 81 stars, while letta has 23.0k stars.
Which is better, claude-soul or letta?
The best choice depends on your use case. Choose claude-soul if Maintain context and recall previous decisions across Claude Code sessions, and letta if Running AI agents locally in your terminal for coding and general tasks..
Is claude-soul free or open source?
Yes, claude-soul is open source on GitHub (MIT).
Is letta free or open source?
Yes, letta is open source on GitHub (Apache-2.0).
→