Comparison

LangMem vs Zep

On the evidence we track, Zep leads this comparison with a composite score of 58/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

LangMem full profile →Zep full profile →

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LangMem43

★Zep58

Attribute comparison across 2 tools
Attribute	LangMem	ZepLeader
vioscaleAI score	43 / 100low · 24%	58 / 100medium · 55%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	open_source	freemium
Price levelpricing.price_level	free	high
Starting pricepricing.starting_price	-	$125
Transparentpricing.transparent	✓	✓
Integrations
Countintegrations.count	1	9
Security
Certificationssecurity.certifications	-	SOC 2 Type II
Gdprsecurity.gdpr	-	✓
Hipaasecurity.hipaa	-	✓
Soc2security.soc2	-	✓
Trust centersecurity.trust_center	https://github.com/security	-
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=langmem&per_page=100 · Last 12m: 0	-
Adoption
Dependent reposadoption.dependent_repos	0	-
Github starsadoption.github_stars	1,703	-
Activity
Commits last 30dactivity.commits_last_30d	6	-
License
Spdxlicense.spdx	MIT	-
Language
Primarylanguage.primary	Python	-
Market
Availabilitymarket.availability	-	Available worldwide
Content
Faqcontent.faq	4 items	6 items

Score

vioscaleAI score

LangMem43 / 100low · 24%

Zep58 / 100medium · 55%

Pricing

Free tier

LangMem✓

Zep✓

Model

LangMemopen_source

Zepfreemium

Price level

LangMemfree

Zephigh

Starting price

LangMem–

Zep$125

Transparent

LangMem✓

Zep✓

Integrations

Count

LangMem1

Zep9

Security

Certifications

LangMem–

ZepSOC 2 Type II

Gdpr

LangMem–

Zep✓

Hipaa

LangMem–

Zep✓

Soc2

LangMem–

Zep✓

Trust center

LangMemhttps://github.com/security

Zep–

Vulnerabilities

LangMemCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=langmem&per_page=100 · Last 12m: 0

Zep–

Adoption

Dependent repos

LangMem0

Zep–

Github stars

LangMem1,703

Zep–

Activity

Commits last 30d

LangMem6

Zep–

License

Spdx

LangMemMIT

Zep–

Language

Primary

LangMemPython

Zep–

Market

Availability

LangMem–

ZepAvailable worldwide

Content

Faq

LangMem4 items

Zep6 items

Capabilities

Feature-by-feature on the axes that matter for agent memory. “-” means undocumented, not absent.

Capability comparison for Agent Memory
Capability	LangMem	Zep
Capabilities
Architecture model	Open source self hosted	Managed cloud API
Graph based entity relationship extraction	-	✓
Automatic context window rolling summarization	-	-
Semantic vs episodic event chronological memory	✓	✓
Cross session and multi thread user persistence	✓	✓
Memory conflict resolution and fact updating	✓	✓
Multi tenant user and agent isolation	-	✓
Native langchain and llamaindex memory classes	✓	✓
Time decay and recency weighted retrieval	-	✓
Zero data retention and pii redaction layer	-	-
SOC2 type ii	-	✓
Mit or apache permissive oss license	✓	✓
Pricing model	Free open source	Usage based per req

Capabilities

Architecture model

LangMemOpen source self hosted

ZepManaged cloud API

Graph based entity relationship extraction

LangMem-

Zep✓

Automatic context window rolling summarization

LangMem-

Zep-

Semantic vs episodic event chronological memory

LangMem✓

Zep✓

Cross session and multi thread user persistence

LangMem✓

Zep✓

Memory conflict resolution and fact updating

LangMem✓

Zep✓

Multi tenant user and agent isolation

LangMem-

Zep✓

Native langchain and llamaindex memory classes

LangMem✓

Zep✓

Time decay and recency weighted retrieval

LangMem-

Zep✓

Zero data retention and pii redaction layer

LangMem-

Zep-

SOC2 type ii

LangMem-

Zep✓

Mit or apache permissive oss license

LangMem✓

Zep✓

Pricing model

LangMemFree open source

ZepUsage based per req

What each one is

The product in its own terms, so the numbers below have context.

LangMem

LangMem provides tools for AI agents to extract important information from conversations, maintain long-term memory across sessions, and continuously improve their behavior. It offers native integration with LangGraph and works with any storage backend.

Independently observed

Zep

Leader

Combines data, documents, and conversation history from across your organization into structured knowledge graphs with access controls, allowing AI agents to retrieve the specific information they need for each task.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

LangMem

Open sourceFree tier

Free and open source (MIT license)

as of 2026-08-21verify ↗

Zep

Leader

from $125/moUsage-basedFree tier

From $125/month. Free tier with 10,000 credits/month.

FreeFree
- 10,000 credits per month
- 2 projects
- 1 Memory MCP Server seat
- 5 custom entity & edge types
- Variable rate limits
- +1 more
Flex$125/month with 50,000 credits, then $25 per 10,000 credits
- 50,000 credits included
- Auto top-up at 20%, 30-day rollover
- 600 projects
- 5 Memory MCP Server seats
- 10 custom entity & edge types
- +2 more
Flex Plus$375/month with 200,000 credits, then $75 per 40,000 credits
- 200,000 credits included
- Auto top-up at 20%, 60-day rollover
- 1,000 projects
- 15 Memory MCP Server seats
- 20 custom entity & edge types
- +4 more
EnterpriseContact sales
- Custom credits with negotiated rates
- Guaranteed rate limits with SLA
- Unlimited projects
- Custom Memory MCP Server seats
- SOC 2 Type II and HIPAA BAA
- +2 more

as of 2026-09-10verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	LangMem	Zep
WebPlatforms	✓	✓
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✗	✓
Self-hostedDeployment	✓	✓

Platforms

Web

LangMem✓

Zep✓

CLI

LangMem✓

Zep✓

Deployment

Cloud / SaaS

LangMem✗

Zep✓

Self-hosted

LangMem✓

Zep✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

LangMem

2 total

LangGraph
GitHub (repository hosting)

Independently observed

Zep

Leader

9 total

Claude
Cursor
OpenAI
Azure OpenAI
Google Gemini
Anthropic
Neo4j
FalkorDB
Amazon Neptune

Independently observed

Still deciding?

LangMem or Zep: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.