pgvector vs Chroma: which does AI recommend?
· ChatGPT Search and Google AI Mode
Based on every AI answer that names both
Reviewed by Dimitry Apollonsky
AI summary
For cost, the claims favor pgvector because it is described as cheaper to run than Chroma. In answers naming both, pgvector is listed first more often than not.
Listed first when AI names both
Recommended when named
Warned against · lower is better
Pick pgvector for
- Cheapest vector store Almost always
Pick Chroma for
- Open-source without cloud Usually
Topic by topic
Mentioned in, as a share of each topic’s answers
pgvector is far ahead for generative AI and clearly ahead for self-hosted open-source databases. Chroma is far ahead for local development prototyping.
pgvector named more14About even4Chroma named more1
pgvector named more
- Vector database for generative AIFar ahead
- Self-hosted open-source vector databaseFar ahead
- Time-filtered vector analysisFar ahead
- Local development prototypingFar ahead
- Self-hosted open source vector databaseClearly ahead
- Backend as a service with vector searchClearly ahead
Chroma named more
- Local development prototypingFar ahead
About even4
Only pgvector is ranked in12
- High-throughput vector search
- Low-latency enterprise RAG
- Multi-tenant vector isolation
- Vector database live re-indexing
- Hosted embeddings with tenant isolation
- Hybrid vector and keyword search
- Managed vector databases for production RAG
- Supervised AI tutoring
- Managed search-as-a-service APIs
- In-warehouse generative AI
- Open-source embedding models
- LLM integration into existing applications
Only Chroma is ranked in3
What people ask AI about pgvector and Chroma
- I am looking for a vector database that is open source and does not require a cloud subscription.Chroma usually first
- For a startup adding embeddings search, which vector store is cheapest to run?pgvector almost always first
- I want to run a vector database on-premise for data privacy. What is the best open-source vector database that is easy to deploy and scale?pgvector almost always first
- Best vector database for document-heavy RAG?pgvector usually first
- We are evaluating vector databases. Who offers performance benchmarking for high-scale RAG?pgvector often first
- How do I add an AI assistant that answers questions from our docs?Level
Who AI mentions first
pgvector is listed first every month.
- Junpgvector listed first: 61%Chroma listed first: 39%
- Julpgvector listed first: 71%Chroma listed first: 29%
- Augpgvector listed first: 64%Chroma listed first: 36%
- Seppgvector listed first: 58%Chroma listed first: 42%
ChatGPT Search usually lists pgvector first. Google AI Mode is level, listing either first about as often.
- ChatGPT Searchpgvector listed first: 75%Chroma listed first: 25%
- Google AI Modepgvector listed first: 48%Chroma listed first: 52%
Also named alongside pgvector and Chroma
pgvector vs Chroma: common questions
- Is pgvector better than Chroma?
- For cost, the claims favor pgvector because it is described as cheaper to run than Chroma. In answers naming both, pgvector is listed first more often than not.
- Do ChatGPT and Google AI Mode recommend pgvector or Chroma?
- ChatGPT Search usually lists pgvector first. Google AI Mode is level, listing either first about as often.
- What are the alternatives to pgvector and Chroma?
- AI most often names Qdrant, Milvus, Weaviate and Pinecone in the same answers.
- When is pgvector the better pick?
- AI usually lists pgvector first for: Cheapest vector store.
- When is Chroma the better pick?
- AI usually lists Chroma first for: Open-source without cloud.
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