Letta (formerly MemGPT) is a paid ai memory & search tool starting at Free ($0/month)/month. We looked at what you actually get, what real users say, and whether the price matches the value. Here's our take.
Letta (formerly MemGPT) is worth it if you need ai memory & search tools. Purpose-built for persistent agent memory, making it a stronger fit than stateless chat tools for assistants that need to remember users, preferences, and prior work across sessions. makes it a solid choice.
💰 Bottom line: Free ($0/month) gets you ai memory platform for building stateful agents that can preserve selected context across sessions, manage long conversations, and support applications that need durable agent memory
For Free ($0/month), here's what that buys you:
$0/mo ÷ 8 hours saved = $0.00 per hour of value
Compare that to hiring a $ai memory & search professional at $40/hour
Even at minimum wage ($15/hr), Letta (formerly MemGPT) saves you $120 over doing it manually.
We're not here to sell you Letta (formerly MemGPT). Here's what you should know before buying:
Quick comparison (not a full review):
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Letta (formerly MemGPT): Better if you need Developer teams building stateful AI agents with persistent memory and long-running context needs
Microsoft's open-source framework for building multi-agent AI systems with asynchronous, event-driven architecture.
Microsoft AutoGen: Better if you need Teams in the Microsoft ecosystem building complex multi-agent AI systems that require cross-language support and enterprise-grade observability.
Letta (formerly MemGPT): Better if you need Developer teams building stateful AI agents with persistent memory and long-running context needs
Open-source Python framework for orchestrating role-playing, autonomous AI agents that collaborate as a 'crew' to complete complex tasks.
CrewAI: Better if you need their specific features
Letta (formerly MemGPT): Better if you need Developer teams building stateful AI agents with persistent memory and long-running context needs
| Use Case | Verdict | Why |
|---|---|---|
| Freelancers | ⚠️ | Affordable for solo professionals |
| Students | ✅ | Free tier available for learning |
| Small Teams (2-10) | ⚠️ | Check if team features are available |
| Enterprise | ✅ | Enterprise features and support needed |
Letta (formerly MemGPT) may have a learning curve for beginners. Consider starting with the free tier before committing to paid plans.
Letta (formerly MemGPT) remains relevant in 2026 with No specific 2026 product updates were visible in the provided truncated content; verify Letta's current release notes or documentation for the latest changes.. The ai memory & search market continues to grow, making it a solid investment for professionals.
The free tier covers basic needs but upgrading unlocks advanced features like 5,000 monthly credits. Most professionals will need the paid version.
Compare the features you actually need against each plan to find the best value for your use case.
While there are other ai memory & search tools available, Letta (formerly MemGPT)'s feature set and reliability often justify its pricing. Compare alternatives carefully.
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Last verified March 2026