LangChain vs Zep

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

LangChain compared with Zep
Detail	LangChain	Zep
What it does	The open agent platform to own your intelligence	The unified context layer for enterprise data
Stage	Established	Not given
Founded	2023	2023
Based in	US	US
Pricing model	Not given	Freemium
Pricing	Developer plan is free for solo users with up to 5k base traces per month, then pay-as-you-go. Plus plan costs $39/seat/month with 10k base traces included. Enterprise plan offers custom pricing with advanced options.	Free plan: 10,000 credits per month. Flex plan: $125/month with 50,000 credits included, then $25 per 10,000 credits. Flex Plus: $375/month with 200,000 credits included, then $75 per 40,000 credits. Enterprise: custom credits with negotiated rates. Credits consumed based on Episode size: 1 credit p
Key features	Agent observability with step-by-step tracing Agent evaluation and scoring Agent deployment infrastructure Production monitoring with online evaluations Autonomous agent improvement with Engine Secure sandbox execution for agent-generated code LLM Gateway for model call control No-code agent builder Fleet Open source frameworks for agent development	Sub-200ms context retrieval at scale Temporal context graphs with point-in-time queries
What makes it different	Comprehensive platform covering the entire agent development lifecycle from building to monitoring Open source frameworks with options from quick-start to low-level control Built-in observability and evaluation capabilities integrated into the platform Support for long-running autonomous agents with Deep Agents framework	Reduces token use by up to 90% compared to traditional retrieval Temporal context graphs that track how business information changes over time Enterprise-scale Context Lake supporting millions of graphs
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	88 +1 (up) since last check	70 +1 (up) since last check
Trust Flow (Majestic)	56	16
Citation Flow (Majestic)	64	44
Referring domains (Majestic)	28586	2072

6 details filled in for both companies.

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