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Find the right AI tool in 2 minutes. Independent reviews and honest comparisons of 890+ AI tools.

  1. Home
  2. Tools
  3. Letta (formerly MemGPT)
  4. Alternatives
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Letta (formerly MemGPT) Alternatives — Best Alternatives for 2026

Exploring alternatives to Letta (formerly MemGPT)? Here are 6 competing ai memory & search tools with detailed comparisons to help you choose the right fit.

#1
L

LangChain

Full Review →
LangChain Pricing →LangChain Pros & Cons →Compare with Letta (formerly MemGPT) →
#2
A

Microsoft AutoGen

Full Review →
Microsoft AutoGen Pricing →Microsoft AutoGen Pros & Cons →Compare with Letta (formerly MemGPT) →
#3
C

CrewAI

Full Review →
CrewAI Pricing →CrewAI Pros & Cons →Compare with Letta (formerly MemGPT) →
#4
L

LlamaIndex

Full Review →
LlamaIndex Pricing →LlamaIndex Pros & Cons →Compare with Letta (formerly MemGPT) →
#5
S

Microsoft Semantic Kernel

Full Review →
Microsoft Semantic Kernel Pricing →Microsoft Semantic Kernel Pros & Cons →Compare with Letta (formerly MemGPT) →
#6
H

Haystack

Full Review →
Haystack Pricing →Haystack Pros & Cons →Compare with Letta (formerly MemGPT) →

Frequently Asked Questions

What is the best alternative to Letta (formerly MemGPT)?

The top alternatives to Letta (formerly MemGPT) include LangChain, Microsoft AutoGen, CrewAI. Each has different strengths — compare them above to find the best fit for your needs.

Is there a free alternative to Letta (formerly MemGPT)?

Many ai memory & search tools offer free tiers or open-source alternatives. Check each alternative's pricing page for current free plan availability.

How do I choose between Letta (formerly MemGPT) and its alternatives?

Consider your specific use case, budget, team size, and required integrations. Our comparison pages break down the key differences to help you decide.

More about Letta (formerly MemGPT)

PricingReviewFree vs PaidPros & ConsWorth It?Tutorial