PostgresML alternatives
6 rag tools in the same lane as PostgresML, ranked by editorial score.
SU
Supabase
RAG
Open-source Firebase alternative built on Postgres with a first-class pgvector AI toolkit.
Freemium· Free: $0 · Pro: $25 · Team: $599 · Enterprise: CustomRAG chatbot backendsemantic document search
DA
DataStax Astra DB
RAG · Bring-your-own embeddings; integrates with OpenAI, Cohere, Hugging Face, Mistral, NVIDIA NIM, and Vertex AI via server-side vectorize
8.6
Serverless vector and document database for production RAG and AI agents
Freemium· Small On-Demand: Contact sales · Medium (Balanced): Contact sales · Medium (Storage Optimized): Contact sales · Large (Balanced): Contact sales · Large (Storage Optimized): Contact salesRAG chatbot over enterprise documentsAgent long-term memory store
DV
Databricks Vector Search
RAG · Multi-model (BYO embeddings or Databricks-hosted)
8.1
Managed hybrid vector search that lives inside the Databricks lakehouse and auto-syncs with your source tables.
Enterprise· Standard: $605 · Storage Optimized: $922rag-retrievalhybrid-search
RI
Rivestack
RAG · OpenAI embeddings (auto-embeddings)
7.1
Managed Postgres with pgvector on dedicated NVMe, pitched as a cheaper RAG backend than Pinecone or Supabase.
Freemium· Free: $0/month · Solo: $29/month · HA Cluster: Starting at $49/node/monthrag-backendvector-search
LA
LanceDB
RAG
8.2
Open-source multimodal lakehouse and vector database built for AI training and retrieval at petabyte scale.
Freemium· Open-source free; LanceDB Cloud and Enterprise via contact salesvector-searchrag
TI
TiDB
RAG
AI-native distributed SQL database with built-in vector search, agent memory, and RAG pipelines
Freemium· TiDB Cloud Starter: $0 · TiDB Cloud Essential: ≈$20 / day · TiDB Cloud Premium: $1800 · TiDB Cloud Dedicated: $1376 · TiDB Self-Managed: Pricing upon requestAgent memory storeRAG retrieval backend