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Mem0 vs Letta: Which AI Memory Platform Is Better for Production Agents?

If you are looking for a Letta alternative focused on production AI agent memory, Mem0 is built for persistent memory across users, sessions, agents, and organizations — with stronger published benchmark results, a simpler integration path, and enterprise compliance out of the box.

If you are looking for a Letta alternative focused on production AI agent memory, Mem0 is built for persistent memory across users, sessions, agents, and organizations — with stronger published benchmark results, a simpler integration path, and enterprise compliance out of the box.

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Open source

Managed cloud

Free Tier

PRICING

self hosting

LongMemEval

LoCoMo

BEAM 1M / 10M

Coding Agent


Memory scopes

Local / MCP support

GitHub Stars

Mem0

on managed clouD

Starting from $19/month (SEE PRICING)

94.4

92.5

64.1 / 48.6

Agent integrations (Claude Code, Codex, OpenCode, Anti Gravity)

Session, User, Agent, Org

56K+

Letta

Free tier for Letta Code

Starting from $20/month

Not published

74.0

Not published

Letta Code


Agent-level memory tiers

11.3K (MemGPT)

Mem0

Letta

Open source

Managed Cloud

Free Tier

ON MANAGED CLOUD

Free tier for Letta Code

Pricing

STARTING $19/month

Starting $20/month

Self-Hosting

LongMemEval

94.4

Not published

LoCoMo

92.5

74.0

BEAM 1M / 10M

64.1 / 48.6

Not published

Agent Portability

Standard SDK

Agent File (.af) format

Memory Scopes

Session, User, Agent, Org

Agent-level memory tiers

Local / MCP Support

GitHub Stars

56K+

11.3K (MemGPT)

Background Reasoning

Background memory processing

Sleep-time compute, continual learning

Compliance

SOC 2 (Type 1), HIPAA

Not publicly disclosed

Benchmarks

Mem0’s token-efficient memory algorithm leads across three major memory evaluations: LongMemEval, LoCoMo, and BEAM. The key difference is not only accuracy, but accuracy under a practical token budget.

Mem0’s token-efficient memory algorithm leads across three major memory evaluations: LongMemEval, LoCoMo, and BEAM. The key difference is not only accuracy, but accuracy under a practical token budget.

LongMemEval

Long-horizon recall and temporal reasoning across multi-session chat.

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MEM0

94.4

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Letta

~

LongMemEval

Long-horizon recall and temporal reasoning across multi-session chat.

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MEM0

94.4

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Letta

~



LoCoMo

Naturalistic long conversation memory across sessions and question categories.

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MEM0

92.5

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Letta

74.0

LoCoMo

Naturalistic long conversation memory across sessions and question categories.

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MEM0

92.5

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Letta

74.0



BEAM

Scale test for recall across 1M item memory stores.

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MEM0

64.1

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Letta

~

BEAM

Scale test for recall across 1M item memory stores.

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MEM0

64.1

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Letta

~

Why Mem0 Wins for Production Agent Memory

Mem0 is stronger when your core problem is accurate, persistent memory for AI agents in production.

Mem0 is stronger when your core problem is accurate, persistent memory for AI agents in production.

Letta / MemGPT does not currently publish a LongMemEval score, so this comparison focuses on industry-relevant memory capabilities instead. The table above compares multi-session recall and temporal reasoning, where Mem0 leads. Mem0 also achieves strong results while using less context than other competitors, making it more efficient for production agent memory. Mem0 is also significantly easier to integrate into an existing agent stack. Letta is a full agent framework, which means teams build agents inside Letta. Mem0, by contrast, works as a memory layer that can be added to your current architecture. If you already have agents in production and want persistent, accurate memory without rebuilding your stack, Mem0 is the lower-friction path. For enterprise teams, Mem0 also offers SOC 2 Type I and HIPAA compliance on managed cloud. Letta does not currently publish equivalent compliance certifications.

Letta / MemGPT does not currently publish a LongMemEval score, so this comparison focuses on industry-relevant memory capabilities instead. The table above compares multi-session recall and temporal reasoning, where Mem0 leads. Mem0 also achieves strong results while using less context than other competitors, making it more efficient for production agent memory. Mem0 is also significantly easier to integrate into an existing agent stack. Letta is a full agent framework, which means teams build agents inside Letta. Mem0, by contrast, works as a memory layer that can be added to your current architecture. If you already have agents in production and want persistent, accurate memory without rebuilding your stack, Mem0 is the lower-friction path. For enterprise teams, Mem0 also offers SOC 2 Type I and HIPAA compliance on managed cloud. Letta does not currently publish equivalent compliance certifications.

When to Choose Mem0 Over Letta's MemGPT

Choose Mem0 when memory accuracy, ease of integration, and enterprise compliance are the priority.

Choose Mem0 when memory accuracy, ease of integration, and enterprise compliance are the priority.

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Choose Mem0 if:

You need a drop-in memory layer for an existing agent stack (LangChain, CrewAI, AutoGen, or custom)

You want the strongest published benchmark results across LongMemEval, LoCoMo, and BEAM

You need memory that works across users, sessions, agents, and organizations — not just agent-level tiers

You want predictable pricing without per-agent and per-second tool execution fees

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CHOOSE Letta IF:

You want to build agents inside a full agent framework with OS-inspired memory management

You need Letta Code — a memory-first coding agent with git-backed context and #1 open source Terminal-Bench ranking

You need agent portability across model providers via the Agent File (.af) format

For developers who want proof, not promises.

80K users

“Mem0 transformed our AI companion in just one day of integration, delivering personalized support that remembers user journeys and significantly reduced our costs. It's been one of our highest-ROI decisions.”

Koby Conrad

CEO, Sunflower

Mem0 allowed us to unlock true personalized tutoring for every student, and it took us just a weekend to integrate.

Michael Tong

CTO, RevisionDojo

Weekend integration

Weekend integration

Mem0 turned our AI tutors into true learning companions - tracking each student’s struggles, strengths, and learning style across the entire platform and tools.

Abhi Arya

Co-Founder, Opennote

40% token reduction

40% token reduction

Install In Minutes

Integrate Mem0 in a few lines of code with Python and JavaScript SDKs plus REST, so you ship memory without touching infra.

Integrate Mem0 in a few lines of code with Python and JavaScript SDKs plus REST, so you ship memory without touching infra.

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# Step 1 — Install the SDK (run in your terminal, not in Python):#pip install mem0ai # Step 2 — Save this as mem0_quickstart.py and run with: python mem0_quickstart.pyimport osfrom mem0 import MemoryClient # Set your API key (get one at https://app.mem0.ai)client = MemoryClient(api_key=os.getenv("MEM0_API_KEY", "your-api-key-here")) # Add a memorymessages = [    {"role": "user", "content": "I'm a vegetarian and allergic to nuts."},    {"role": "assistant", "content": "Got it! I'll remember your dietary preferences."},]client.add(messages, user_id="user123") # Search memoriesresults = client.search(    "What are my dietary restrictions?",    user_id="user123",)print(results)

AI memory that adapts
to your domain

Mem0 helps AI remember what matters.

Mem0 helps AI remember what matters.

Healthcare

Education

E-commerce

Customer Support

Sales & CRM

Smart Patient Care Assistant

Remembers patient history, allergies, and treatment preferences across visits therefore providing personalized care that improves with every interaction.

Chronic Condition Companion

Learns what works (and what doesn’t) for the patient over time, offering thoughtful reminders and insights tailored to each patient’s journey.

Therapy Progress Tracker

Builds on previous sessions to deliver consistent, context-aware mental health support. Creates trust through conversations that remember what matters to each patient.

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HEALTHCARE

Smart Patient Care Assistant

Remembers patient history, allergies, and treatment preferences across visits therefore providing personalized care that improves with every interaction.

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Education

Adaptive Learning Tutor

Adapts to each student's pace and learning style, remembering what works best. Transforms one-size-fits-all education into personalized learning that evolves with every lesson.

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Sales & CRM

Sales Assistant with Persistent Context

Track every interaction, objection, and milestone across long sales cycles ensuring reps have instant recall at every touchpoint.

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Built for enterprise
Designed for control

Memory at scale is infrastructure. Mem0 gives enterprise teams governance, reliability, and full observability so engineers spend time building, not recovering lost context.

Memory at scale is infrastructure. Mem0 gives enterprise teams governance, reliability, and full observability so engineers spend time building, not recovering lost context.

Governance

SOC 2, HIPAA, BYOK, zero-trust. Your data stays yours.

Portable

Kubernetes, private cloud, or air-gapped. Same API everywhere.

Auditable

Every read and write logged. Know what, who, and when.

We take security and privacy seriously. Mem0 is SOC 2 (Type 1) and HIPAA compliant, ensuring your data is protected with industry-standard safeguards at every step.

We take security and privacy seriously. Mem0 is SOC 2 (Type 1) and HIPAA compliant, ensuring your data is protected with industry-standard safeguards at every step.

FAQ

Frequently Asked Questions

Is Mem0 better than Letta?

Is Mem0 better than Letta?

How does Mem0’s algorithm work?

How does Mem0’s algorithm work?

How does Letta’s pricing compare to Mem0?

How does Letta’s pricing compare to Mem0?

Can I self-host both Mem0 and Letta?

Can I self-host both Mem0 and Letta?

How do I get started with mem0?

How do I get started with mem0?