Letta vs Mem0

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Letta compared with Mem0
Detail	Letta	Mem0
What it does	Machines that learn	The memory layer for AI agents
Stage	Startup	Growing
Founded	Not given	Not given
Based in	US	US
Pricing model	Not given	freemium
Pricing	Not given	Not given
Key features	Memory evolution Continuous learning Identity management Capability evolution Context management	Memory Compression Engine Automatic memory extraction Intelligent retrieval Graph memory with entity linking Dream memory consolidation Enterprise governance and controls Multi-platform deployment Complete audit logging
What makes it different	Agents that remember everything and learn continuously Memory, identity, and capabilities evolve with experience Virtual context management technology	Persistent memory without pipeline changes Token cost reduction Automatic memory learning and compression Multi-signal retrieval benchmarked on industry standards
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	73 no change since last check	75 no change since last check
Trust Flow (Majestic)	30	29
Citation Flow (Majestic)	49	49
Referring domains (Majestic)	2455	3410

5 details filled in for both companies.