MongoDB Atlas Vector Search vs pgvector (Supabase)
MongoDB Atlas Vector brings vector indexing natively into JSON document schemas with Lucene HNSW. pgvector brings vector embeddings into relational PostgreSQL with ACID foreign keys and SQL joins.
Monthly Cost Across Realistic Benchmarks
RAG Prototype · 100k×1536 fp32
MongoDB Atlas Vector Search: $58.40/mo Supabase Vector (pgvector): $25.00/mo
Cheaper: Supabase Vector (pgvector)Mid Scale · 1M×768 INT8
MongoDB Atlas Vector Search: $58.40/mo Supabase Vector (pgvector): $25.00/mo
Cheaper: Supabase Vector (pgvector)Large · 5M×768 INT8 10M queries
MongoDB Atlas Vector Search: $58.40/mo Supabase Vector (pgvector): $25.03/mo
Cheaper: Supabase Vector (pgvector)