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Head-to-head comparison

Weaviate vs LlamaIndex

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

Feature comparison

Feature
Weaviate
LlamaIndex
Category
vector-databases
ai-agents
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

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

LlamaIndex pros and cons

Open-source frameworks are free (MIT)
Strong focus on retrieval and data quality
LlamaParse excels at complex document parsing
Managed LlamaCloud for production data workflows
Overlaps with LangChain, adding decision fatigue
LlamaCloud credit costs scale with document complexity
Framework surface area has grown large

Which one should you choose?

Best overall signal
LlamaIndex

Selected using Toolglade popularity signals such as views and votes.

Best value signal
Weaviate

Selected using free-plan availability and engagement signals.

Best for

Weaviate

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

LlamaIndex

  • RAG over documents
  • Complex PDF parsing
  • Knowledge agents
  • Enterprise data ingestion
  • Document-heavy RAG applications

FAQ

Is Weaviate better than LlamaIndex?

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

Which tool has a free plan?

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