Weaviate vs Zep Memory: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for Weaviate and Zep Memory side by side. This page compares data; it is not a hands-on review.
On the data: On the data below, Zep Memory leads on lower entry price. We do not name an overall winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Weaviate
Open-source vector database with ML
Best for you if:
- • You want built-in vectorization
Zep Memory
Build personalized, fast, and reliable AI agents with comprehensive, evolving memory.
Best for you if:
- • You want significantly improves AI agent accuracy and personalization by providing rich, evolving context
| At a Glance | Weaviate | Zep Memory |
|---|---|---|
Starts at | Free plan, paid from $45/mo Flex plan | Free plan, paid from $25/mo, billed monthly Flex plan |
Category | Data & Databases Vector Databases | Data & Databases Developer Tools |
Rating | 4.4/5 G2 4.4 47 reviews | n/a |
Free plan | Yes | Yes |
Watch out for | Overage fees for exceeding Flex plan limits | n/a |
Choose Weaviate or Zep Memory?
Choose Weaviate if
- You want built-in vectorization
- You want GraphQL API
Choose Zep Memory if
- You want significantly improves AI agent accuracy and personalization by providing rich, evolving context
- You want reduces inference costs and response latency by delivering token-efficient and relevant context
- Budget matters ($25/mo, billed monthly vs $45/mo)
In-Depth Analysis
Weaviate
Open-source vector database with ML
Weaviate's pricing is fair, offering a generous free trial and a flexible entry point with the Flex plan at $45/month.
Watch out
Overage fees for exceeding Flex plan limits
Strengths
- Pro: Built-in vectorization
- Pro: GraphQL API
- Pro: Hybrid search
- Pro: Good documentation
- Pro: Open source
Weaknesses
- Con: Learning curve
- Con: Memory intensive
- Con: Self-hosting complex
- Con: Cloud pricing high
- Con: Less mature than Pinecone
Key features
Zep Memory
Build personalized, fast, and reliable AI agents with comprehensive, evolving memory.
Zep Memory's pricing feels fair, especially with a generous Free tier offering 1,000 episodes a month.
Strengths
- Pro: Significantly improves AI agent accuracy and personalization by providing rich, evolving context.
- Pro: Reduces inference costs and response latency by delivering token-efficient and relevant context.
- Pro: Integrates diverse data sources (chat, business data, user behavior) into a single knowledge graph.
- Pro: Designed for real-time applications with extremely low retrieval latency (<200ms).
- Pro: Supports custom graph ontologies for domain-specific memory and improved relevance.
Weaknesses
- Con: No explicit free tier mentioned, suggesting it's a paid solution.
- Con: Requires integration and setup to connect various data sources.
- Con: Complexity of managing and defining custom graph ontologies might require some expertise.
Key features
Plans and prices: Weaviate vs Zep Memory
| Tool | Plans and prices | Source |
|---|---|---|
| Weaviate |
| weaviate.io/pricing read Oct 14, 2026 |
| Zep Memory |
| getzep.com/pricing read Oct 13, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on Weaviate pricing and Zep Memory pricing.
Key Takeaways
Weaviate
- Choose if you want open-source vector database with ML
Zep Memory
- Lower entry price: $25/mo, billed monthly vs $45/mo
What the data shows
On the data below, Zep Memory leads on lower entry price. We do not name an overall winner for this pair.
- Only Weaviate has a published user rating (4.4/5 from 47 reviews); Zep Memory has none we can show.
- Zep Memory has the lower entry price: $25/mo, billed monthly (Flex) against $45/mo (Flex) for Weaviate.
- Both have a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do Weaviate and Zep Memory compare in 2026?
On the data below, Zep Memory leads on lower entry price. We do not name an overall winner for this pair. Only Weaviate has a published user rating (4.4/5 from 47 reviews); Zep Memory has none we can show. Zep Memory has the lower entry price: $25/mo, billed monthly (Flex) against $45/mo (Flex) for Weaviate. Both have a free plan.
What are Weaviate and Zep Memory used for?
Weaviate: Open-source vector database with ML. Zep Memory: Build personalized, fast, and reliable AI agents with comprehensive, evolving memory.
What does Weaviate cost vs Zep Memory?
Weaviate's cheapest paid plan is Flex at $45/mo; it also has a free plan. Zep Memory's cheapest paid plan is Flex at $25/mo, billed monthly; it also has a free plan. Prices read on the vendors' pricing pages, latest check Oct 14, 2026.
What's the main difference between Weaviate and Zep Memory?
Weaviate's main strength: built-in vectorization. Zep Memory's main strength: significantly improves AI agent accuracy and personalization by providing rich, evolving context.