HelixDB alternatives
6 rag tools in the same lane as HelixDB, ranked by editorial score.
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
CO
Cognee
RAG · Multi-model (Claude, OpenAI, others)
7.2
Open-source graph-memory layer that gives AI agents persistent, queryable context across sessions.
Freemium· Hobby free (1M tokens/mo); Growth $5/workspace/mo + token usage; Enterprise customagent-memoryknowledge-graphs
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
PO
PostgresML
RAG · Multi-model (Llama, Mistral, open-source embeddings)
7.1
PostgreSQL extension that runs embeddings, vector search, and LLM inference inside your database.
Freemium· Serverless: From $7.50 per query hour · Dedicated: From $0.60 per instance hour · Enterprise: Custom pricingvector-searchrag
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