Letta vs Supermemory
Side-by-side comparison of two AI agent tools
Short answer
- Pick Letta for: letta is the platform for building stateful agents: AI with advanced memory that can learn and self-improve. Pick Supermemory for: memory and context engine + app that is extremely fast, scalable, and can be run fully locally.
From GitHub data refreshed daily.
Lettaopen-source
Letta is the platform for building stateful agents: AI with advanced memory that can learn and self-improve over time.
S
Supermemoryopen-source
Memory and context engine + app that is extremely fast, scalable, and can be run fully locally. The Memory API for the AI era.
Metrics
| Letta | Supermemory | |
|---|---|---|
| Stars | 25.0k | 31.1k |
| Star velocity /mo | 512.8571428571429 | 345 |
| Commits (90d) | 7 | 185 |
| Releases (6m) | 1 | 10 |
| Overall score | 0.5869394693270381 | 0.7582987471738448 |
Pros
- +Advanced persistent memory system that allows agents to learn and improve over time across sessions
- +Dual deployment options with both local CLI tool and cloud API for different use cases and security requirements
- +Model-agnostic architecture supporting multiple LLM providers with extensive SDK support for TypeScript and Python
Cons
- -Requires Node.js 18+ for CLI usage, which may limit adoption in some environments
- -API-based functionality requires API keys and cloud dependency for full feature access
- -As a relatively new platform for stateful agents, may have a learning curve for developers new to persistent memory concepts
Use Cases
- •Building coding assistants that remember project context and learn from previous debugging sessions
- •Creating customer support agents that maintain conversation history and learn customer preferences over time
- •Developing personal AI assistants that evolve their responses based on user behavior patterns and feedback
FAQ
- Which is more popular, Letta or Supermemory?
- Supermemory has more GitHub stars (31,062 vs 25,005).
- Which is more actively developed, Letta or Supermemory?
- Supermemory had more commits in the last 90 days (185 vs 7).
- Should I use Letta or Supermemory?
- Compare their capabilities, limitations and "best for" notes above. Both are open source, so trying each on a small task is the fastest way to decide.