letta
★ 23.0k
vs
locus
★ 13
letta vs locus
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.; locus: Locus provides persistent project-aware memory for AI coding tools, using three memory layers: structural, semantic, and episodic. It works with any MCP-compatible client and offers 14 tools and 3 resources for exploring, searching, and managing memory. Carbon Copy enables passive conversation capture for later recall.
01
TL;DR
Choose letta if…Running AI agents locally in your terminal for coding and general tasks.
Choose locus if…Maintain project context across AI coding sessions to avoid losing architectural decisions and file structure awareness
02
Side-by-Side Comparison
03
Features
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
locus01Three memory layers: structural (auto-parsed), semantic (user-curated), episodic (auto-captured)
02Carbon Copy passive conversation capture via inbox-based event protocol
0314 MCP tools for exploring, recalling, searching, remembering, and managing memory
04FTS5 full-text search across all memory layers and conversation events
054-layer security: metadata-only, file denylist, content redaction, audit UX
04
Use Cases
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.
locus↳Maintain project context across AI coding sessions to avoid losing architectural decisions and file structure awareness
↳Store and retrieve important decisions and their rationale for consistent development practices
↳Passively capture conversation history from coding sessions for later search and recall
05
Best For
lettaMost PopularTrendingEssential
locusTrendingMemory & ContextData Processing
FAQ
FAQ
What is the difference between letta and locus?
Both letta and locus are in the Memory & Context category. letta has 23.0k stars, while locus has 13 stars.
Which is better, letta or locus?
The best choice depends on your use case. Choose letta if Running AI agents locally in your terminal for coding and general tasks., and locus if Maintain project context across AI coding sessions to avoid losing architectural decisions and file structure awareness.
Is letta free or open source?
Yes, letta is open source on GitHub (Apache-2.0).
Is locus free or open source?
Yes, locus is open source on GitHub (MIT).
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