What is the main difference between Letta and Mem0?

Letta and Mem0 are both ai memory & context but differ in their approach, features, and target audience. Compare their GitHub stats, technology stack, and community adoption to make the best choice.

Which is better: Letta or Mem0?

The choice between Letta and Mem0 depends on your specific needs, technical requirements, and team preferences. Both are quality open source solutions with active communities.

Can I migrate from Letta to Mem0?

Migration between Letta and Mem0 is possible but requires careful planning. Consider data export/import capabilities, feature parity, and potential workflow changes.

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Letta vs Mem0

Learn how Letta and Mem0 differ in their key features, development activity, technology stack and community adoption, so you can decide which of these ai memory & context is best for you.

Letta

Build persistent AI agents with continuous memory, scheduled tasks, and multi-channel communication via Slack, Discord, and Telegram, using your own API keys.

Visit Letta Read more

3,785stars+256(+7.3%)

Last 30 days

Last commit
14 hours ago
Repository age
1 year
Version
v0.34.41
License
Apache-2.0
Self-hosted
Yes
Repository
letta-ai/letta-code

Mem0

Adds persistent, searchable memory to AI agents and apps, so they remember user preferences and past interactions across sessions without pipeline changes.

Visit Mem0 Read more

68,474stars+1,803(+2.7%)

Last 30 days

Last commit
2 days ago
Repository age
3 years
Version
v3.3.1
License
Apache-2.0
Self-hosted
Yes
Repository
mem0ai/mem0

Detailed Comparison

Both Letta and Mem0 have their unique strengths and serve similar purposes effectively. Consider your specific needs regarding popularity, growth, activity, technology, maturity, licensing and features when making your decision.

Mem0 wins

Community & Popularity

Mem0 significantly outpaces Letta in community adoption with 68,474 stars compared to 3,785 stars on GitHub. This 18.1x difference suggests Mem0 has a much larger and more active community. In terms of developer contributions, Mem0 has 8,129 forks, indicating strong developer engagement.

Letta wins

Growth Momentum

Letta is growing faster, adding 256 stars in the last 30 days (+7.3%) against adding 1,803 stars for Mem0 (+2.7%). Letta is the smaller project of the two, so it is closing the gap rather than extending a lead.

Comparable

Development Activity

Both projects show recent activity, with Letta last updated 14 hours ago and Mem0 2 days ago.

Comparable

Technology Stack

Both tools share common technology foundations, being built with JavaScript, CSS, Bash, Typescript, Python. However, they differ in their additional technology choices: Mem0 leverages JSX, Next.js, SCSS.

Mem0 wins

Project Maturity

Mem0 has been in development longer, starting 3 years ago, compared to Letta which began 1 year ago. This 2.4-year head start suggests Mem0 may have more mature features and established processes.

Comparable

Licensing

Both projects use the Apache-2.0 license, providing identical terms for usage and distribution.

Comparable

Use Cases & Features

Both tools serve similar use cases in AI Memory & Context. However, they also have distinct specializations: Letta also focuses on AI Agent Platforms.

Comparable

Hosting & Deployment

Both Letta and Mem0 offer self-hosting capabilities, giving you full control over your data and infrastructure.