Letta (MemGPT) vs Dify
An open-source framework for building stateful AI agents with long-term memory (formerly MemGPT). Letta lets agents remember, learn and manage their own memory over time, so they improve across conversations instead of forgetting.
🧠 Expert verdict
Our expert verdict: Dify is the stronger all-round choice, scoring 4.6/5 versus 4.5/5 for Letta (MemGPT). If budget is your priority, Letta (MemGPT) (Free / Open Source) is the more affordable option. Choose Dify if you want the best agents tool overall; pick Letta (MemGPT) if "Stateful agents with long-term memory" matters more for your workflow.
Letta (MemGPT)
An open-source framework for building stateful AI agents with long-term memory (formerly MemGPT). Letta lets agents remember, learn and manage their own memory over time, so they improve across conversations instead of forgetting.
Dify
Open-source LLM app development platform — build AI workflows, chatbots and agents visually.
Letta (MemGPT)
✅ Pros
- +Stateful agents with long-term memory
- +Agents manage their own memory
- +Improves over time
- +Open source and free
- +Pioneered by the MemGPT research
❌ Cons
- −For developers
- −More complex than stateless bots
- −Setup and tuning
- −Newer ecosystem
🎯 Best for — Letta (MemGPT)
🏷️ Tags — Letta (MemGPT)
Our Verdict
After comparing ratings, pricing and features, Dify comes out ahead with a 4.6/5 rating. It is the better choice for most users.
Expert take on each tool
📌 Letta (MemGPT)
Letta (formerly MemGPT) is the go-to open-source framework for stateful agents with real long-term memory: agents that remember and improve instead of resetting each chat. Ideal for developers building assistants meant to last and personalize.
❓ Frequently Asked Questions
Which is better: Letta (MemGPT) or Dify?
Dify has the higher user rating (4.6/5 vs 4.5/5), making it the stronger overall pick. That said, Letta (MemGPT) can still be the better fit depending on your budget and specific needs — see the full comparison above.
Is Letta (MemGPT) or Dify cheaper?
Letta (MemGPT) (Free / Open Source) is generally more budget-friendly than Dify (Free / $59/mo). If cost is your main concern, Letta (MemGPT) is worth trying first — but compare the feature sets above to confirm it covers what you need.
Can I switch from Letta (MemGPT) to Dify?
Yes — switching between Letta (MemGPT) and Dify is usually straightforward since both are agents tools with similar core workflows. Most users can export their data and get started with Dify within a day; just check Dify's free plan before committing to a paid tier.