AutoGPT vs 
Letta
AutoGPT vs Letta compared for 2026 — features, license, ease of use, performance and which one to choose. The original autonomous GPT agent vs Stateful agents with long-term memory.
Updated regularly · curated by olud.ai
AutoGPT vs Letta at a glance
| Spec | AutoGPT | Letta |
|---|---|---|
| Category | AI agent framework | AI agent framework |
| Type | Autonomous agent platform | Agent runtime (memory) |
| License | Polyform Shield | Apache-2.0 |
| Runs locally | Cloud-optional | Self-hosted |
| Primary language | Python / TS | Python |
| Ease of use | Advanced | Advanced |
| Best for | building autonomous goal-driven agents | agents that remember across sessions |
| GitHub stars | 185.6k | 23.9k |
How AutoGPT and Letta score
| Criterion | AutoGPT | Letta |
|---|---|---|
| Popularity | 5.0 | 3.5 |
| Maintenance | 5.0 | 5.0 |
| Ease of use | 2.5 | 2.5 |
| Privacy | 3.5 | 4.5 |
| License freedom | 3.5 | 5.0 |
Scores are computed automatically from public signals — GitHub stars (popularity), recent commit activity (maintenance), license type (freedom), local-first design (privacy) and onboarding complexity (ease of use). Indicative, not a verdict.
What each one is
AutoGPT
AutoGPT is a platform for building, deploying and running autonomous AI agents that chain tasks together to pursue a goal with minimal human input.
- Pioneered the autonomous-agent pattern
- Low-code agent builder and blocks
- Huge community and ecosystem
Letta
Letta (formerly MemGPT) is a framework and server for building stateful agents with long-term memory that persists across sessions, with a visual agent editor.
- Persistent long-term agent memory
- Server with REST API and visual editor
- Model-agnostic and self-hostable
Key differences
AutoGPT is autonomous agent platform, while Letta is agent runtime (memory). Their licenses differ (Polyform Shield vs Apache-2.0), which matters if you ship a commercial product. They also differ in how they run (Cloud-optional vs Self-hosted). In short, AutoGPT fits building autonomous goal-driven agents, and Letta fits agents that remember across sessions.
Which should you choose?
Choose AutoGPT for building autonomous goal-driven agents. Choose Letta for agents that remember across sessions.
There is rarely one winner — many setups use both. The right pick depends on your hardware, your team's skills, and whether you value simplicity or control.
Frequently asked questions
Is AutoGPT or Letta easier to use?
Both sit at a similar level (Advanced). Your choice should come down to fit rather than difficulty.
Are AutoGPT and Letta free?
AutoGPT is free and open source (Polyform Shield), and Letta is free and open source (Apache-2.0). Neither charges for the core software.
Can I run AutoGPT and Letta locally?
AutoGPT: cloud-optional · Letta: self-hosted. Both can be used without sending your data to a third-party cloud where their setup allows.
AutoGPT vs Letta — which should I pick in 2026?
Choose AutoGPT for building autonomous goal-driven agents. Choose Letta for agents that remember across sessions.
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