vioscale
Comparison

LangMem vs Zep

On the evidence we track, Zep leads this comparison with a composite score of 64/100. 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 →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
LangMem47
★Zep64
Score
Vioscale score
LangMem47 / 100low · 31%
Zep64 / 100medium · 55%
Pricing
Free tier
LangMem✓
Zep✓
Model
Price level
LangMemfree
Zephigh
Starting price
LangMem–
Zep$104
Transparent
LangMem✓
Zep✓
Integrations
Count
LangMem2
Zep9
Security
Hipaa
LangMem–
Zep✓
Soc2
LangMem–
Zep✓
Vulnerabilities
Adoption
Dependent repos
LangMem0
Zep–
Github stars
LangMem1,626
Zep–
Activity
Commits last 30d
LangMem4
Zep–
License
Spdx
LangMemMIT
Zep–
Language
Primary
LangMemPython
Zep–
Market
Availability
LangMem–
ZepAvailable worldwide

Capabilities

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

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

Not documented yet.

Zep

Leader

A production-grade memory system for AI agents that uses temporal context graphs to store and retrieve conversations and business data, with automatic updates when facts change. Supports multi-tenant governance with flexible deployment options from managed cloud to customer-controlled infrastructure.

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 verify ↗

Zep

Leader
from $104/moUsage-basedFree tier

Free tier (10k credits/month). Flex from $104/month annually (50k credits). Flex Plus from $312/month annually (200k credits). Enterprise: custom pricing. Usage-based: $0.0025 per additional credit (Flex) or $0.001875 per credit (Flex Plus).

  • FreeFree
    • 10,000 credits per month
    • 2 projects
    • 1 Memory MCP Server seat
    • 5 custom entity & edge types
    • Context Graph + temporal memory
    • +2 more
  • Flex$104/month billed annually; $25 per 10k additional credits
    • 50,000 credits per month included
    • Auto top-up at 20%
    • 30-day credit rollover
    • 600 projects
    • 5 Memory MCP Server seats
    • +5 more
  • Flex Plus$312/month billed annually; $75 per 40k additional credits
    • 200,000 credits per month included
    • Auto top-up at 20%
    • 60-day credit rollover
    • 1,000 projects
    • 15 Memory MCP Server seats
    • +10 more
  • EnterpriseContact sales
    • Custom credits with negotiated rates
    • Guaranteed rate limits with SLA
    • Unlimited projects
    • Custom Memory MCP Server seats
    • Custom entity & edge types
    • +5 more
as of verify ↗

Platform & deployment

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

Platforms
Web
LangMem✓
Zep✓
CLI
LangMem✓
Zep✓
Deployment
Cloud / SaaS
LangMem✗
Zep✓
Self-hosted
LangMem✓
Zep✓
Hybrid
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

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