EverMind vs Letta
A side-by-side comparison of EverMind and Letta, two Memory tools, drawn from Ignaite's continuously-verified listings.
Compared from listings verified as of
At a glance
The honest brief
EverMind
A brain-inspired, self-evolving memory OS that's portable across agents, posting strong LongMemEval and LoCoMo scores rather than a single-app store.
- Apache-2.0 open-source core
- Self-host or managed cloud
- Portable across agents/platforms
- Strong long-memory benchmark scores
- Newer project, smaller ecosystem
- Self-host setup overhead
- Cloud pricing not fully public
Letta
The productized MemGPT successor — agents edit their own memory blocks (memory-as-OS) to manage a finite context window.
- Self-editing agent memory
- Open source, model-agnostic
- REST APIs + multi-language SDKs
- Reference architecture for memory
- Developer-focused, not no-code
- Memory model has a learning curve
- Younger, evolving framework