Skip to main content
Head-to-head comparison

Mastra vs Weaviate

Compare Mastra and Weaviate side by side across pricing, features, ratings, pros, cons, best-fit use cases, and alternatives.

Feature comparison

Feature
Mastra
Weaviate
Category
coding
coding
Pricing
Free plan
Free plan
Free plan
API access
Mobile app
Browser extension
Team collaboration
Custom training
Self-hosted option
Offline mode
Multi-language support

Mastra pros and cons

TypeScript-native, rare among serious agent frameworks
Open source and free to self-host
Ergonomic agents, workflows, memory, and evals in one toolkit
Strong funding and momentum (22k+ GitHub stars)
Young project with a still-maturing ecosystem
APIs may change as it evolves toward stability
Fewer integrations than older Python frameworks

Weaviate pros and cons

Open source with the option to self-host for free
Managed Weaviate Cloud with a free sandbox
Built-in vectorizer and generative (RAG) modules
Strong hybrid search and metadata filtering
Larger configuration surface than minimalist DBs
Module system adds a learning curve
Managed pricing by vector dimensions can be unintuitive

Which one should you choose?

Best overall signal
Mastra

Selected using Toolglade popularity signals such as views and votes.

Best value signal
Mastra

Selected using free-plan availability and engagement signals.

Best for

Mastra

  • TypeScript agent development
  • full-stack JS AI apps
  • typed agent workflows
  • RAG in Node.js
  • TypeScript and full-stack JavaScript teams

Weaviate

  • RAG applications
  • Hybrid search
  • Semantic search
  • Avoiding vendor lock-in
  • Teams wanting open-source flexibility plus managed option

FAQ

Is Mastra better than Weaviate?

It depends on your use case. Compare category fit, pricing, feature availability, and ratings before choosing.

Which tool has a free plan?

Mastra and Weaviate offer a free plan based on current Toolglade data.

Where can I find alternatives?

View Mastra alternatives or view Weaviate alternatives.

Mastra vs Weaviate: Features, Pricing & Alternatives (2026) | Toolglade | Toolglade