# MongoDB Atlas Vector Search alternatives: what AI models name instead, October 2026

IT AI Recommendation Index, October 2026 Edition. 244 of the 252 answers in the 1 category where MongoDB Atlas Vector Search holds a standing named it neither first nor as an alternative; these are the first choices those answers made. Page: https://it-ai-index.com/vendors/mongodb-atlas-vector-search/alternatives/

## Named instead, most often (every category and segment added)

- Pinecone: 86
- pgvector: 78
- Qdrant: 42
- Chroma: 13
- Weaviate: 11
- Milvus: 8

## Vector databases

**Small business**: 82 of 84 answers did not name MongoDB Atlas Vector Search.

- pgvector: first choice in 40 of those 82
- Pinecone: first choice in 20 of those 82
- Qdrant: first choice in 19 of those 82
- Chroma: first choice in 9 of those 82
- Weaviate: first choice in 3 of those 82
- Supabase pgvector: first choice in 1 of those 82

**Mid-market**: 81 of 84 answers did not name MongoDB Atlas Vector Search (MongoDB Atlas Vector Search is #7 of 10 at 2%).

- pgvector: first choice in 29 of those 81
- Pinecone: first choice in 24 of those 81
- Qdrant: first choice in 18 of those 81
- Chroma: first choice in 4 of those 81
- Weaviate: first choice in 4 of those 81
- Milvus: first choice in 3 of those 81
- Actian VectorAI DB: first choice in 1 of those 81
- PostgreSQL with vector support: first choice in 1 of those 81

**Enterprise**: 81 of 84 answers did not name MongoDB Atlas Vector Search.

- Pinecone: first choice in 42 of those 81
- pgvector: first choice in 9 of those 81
- Milvus: first choice in 5 of those 81
- Qdrant: first choice in 5 of those 81
- Weaviate: first choice in 4 of those 81
- Elastic: first choice in 1 of those 81
- Elasticsearch: first choice in 1 of those 81
- Self-Hosted Qdrant: first choice in 1 of those 81

Published under CC BY 4.0. The output is the models' output; nothing here is a recommendation by the index.