What are the best Letta alternatives?

Popular Letta alternatives include LangMem, cognee, MemGPT. Compare them by features, pricing, access model, and fit for your workflow.

How should I compare Letta competitors?

Start with ai agent memory that match your use case, then compare pricing, access model, integrations, documentation quality, and user signals before choosing.

Top Letta Alternatives (2026)

Compare the best alternatives and competitors to Letta in the AI Agent Memory category. We've gathered 7 similar ai agent memoryso you can weigh features, pricing, and access models before you choose.

Back to Letta

Letta alternatives at a glance

Use this shortlist to compare the strongest ai agent memory before opening individual product pages for full features, reviews, pricing notes, and related alternatives.

Alternative	Best for	Pricing	Access	Signals
LangMem	Horizontal teams	Free	Open Source	669 views · 3 upvotes
cognee	Technology teams	Free	Open Source	578 views · 3 upvotes
MemGPT	Technology teams	Free	Open Source	1,381 views · 2 upvotes
AI Drive	Technology teams	Freemium	Open Source	1,181 views · 2 upvotes
THEO	Technology teams	Freemium	Closed Source	625 views · 2 upvotes
Zep	Technology teams	Freemium	Closed Source	453 views · 2 upvotes
Mem0	Technology teams	Freemium	API	466 views · 1 upvotes

LangMem

Helping AI agents learn and adapt from interactions over time

cognee

Reliable LLM Memory for AI Applications and AI Agents

MemGPT

An LLM framework for building autonomous agents with long-term memory and customizable tools.

AI Drive

Robust cloud storage and advanced file management. Trusted by top universities & 1000+ org

THEO

MAKE YOUR CURRENT AI ASSISTANT TRULY UNDERSTAND YOUR BUSINESS

Zep

Memory foundation for AI stacks, enabling personalized agents and assistants.

Mem0

AI memory layer that enhances LLMs with personalized, long-term context retention

How to choose a Letta alternative

When comparing alternatives to Letta, start with the ai agent memorythat match your access model (open-source, API, or closed-source) and budget. Then evaluate features, integrations, and user reviews on each product page.

Open any agent above to see a full breakdown of its features, use cases, pricing, and reviews, then compare it directly against Letta.

Letta alternatives FAQ

What are the best Letta alternatives?: LangMem, cognee, MemGPT and compare each option by workflow fit, pricing model, access, documentation, and reviews.
Are there free or open-source alternatives to Letta?: Many ai agent memory include free, freemium, API, and open-source options. Use each product page and the related category filters to confirm the current access model.

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