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📖 The AI Tool Bible

Best AI tools for vector databases

26 tools in the RAG category, filtered to vector databases.

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PI

Pinecone

Featured
RAG · Hosted vector DB (not an LLM)
8.8

Managed vector database for production-scale similarity search.

Freemium· Starter: Free · Builder: $20/month flat · Standard: $50/month min. usage · Enterprise: $500/month min. usagemanaged vector DBproduction RAG
EV

Elasticsearch Vector Search

RAG · BYO embeddings (OpenAI, Cohere, Hugging Face, Mistral, Bedrock, Vertex, Azure) plus Elastic's built-in ELSER sparse model and E5 dense model
8.7

Hybrid vector + keyword search in the enterprise-grade Elasticsearch engine

Freemium· Resource based pricing: Pay as you go (monthly) or prepaid · Usage based pricing: Pay as you go (monthly) or prepaid · License based pricing: ?RAG chatbot over enterprise docsHybrid semantic + keyword product search
SC

Snowflake Cortex

RAG · Anthropic Claude, Meta Llama, Mistral Large 2, Snowflake Arctic
8.7

Generative AI and RAG built into the Snowflake data cloud

Enterprise· Standard: Contact sales · Enterprise: Contact sales · Business Critical: Contact sales · Virtual Private Snowflake: Contact salesEnterprise RAG chatbot over governed dataNatural-language SQL for business analysts
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
MA

MongoDB Atlas Vector Search

RAG · Bring-your-own embeddings (OpenAI, Cohere, open models); native Voyage AI embeddings and rerankers
8.6

Vector search built into the operational database you're already using.

Freemium· Free: $0 · Flex: Up to $30 · Dedicated: Starts at $56.94RAG over enterprise documentsProduct and content recommendation engines
WE

Weaviate

RAG · Hosted vector DB (not an LLM)
8.4

Open-source vector DB with hybrid search and modules.

Freemium· Free: $0 · Flex: $45 · Premium: $400self-hosted RAGhybrid search
FE

Feast

RAG
8.2

Open-source feature store that serves consistent features to ML training and online inference, with RAG vector search built in.

Free· Free, open source (Apache 2.0); self-hostedfeature-storerag-retrieval
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
VE

Vespa

RAG · Hosted search engine (not an LLM)
8.2

Yahoo's open-source search engine with vector + sparse retrieval.

Freemium· Free open-source; Vespa Cloud paidlarge-scale searchranking
CH

Chroma

RAG · Hosted vector DB (not an LLM)
8.1

Embedded, developer-friendly vector store for Python.

Freemium· Starter: $0 · Team: $250 · Enterprise: Customprototypingembedded RAG
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
EP

Epsilla

RAG · Multi-model
7.3

Agent-as-a-Service platform with managed RAG and a no-code builder for vertical enterprise AI.

Freemium· Free Tier: $0/month · Starter Tier: $29/month · Professional Tier: $249/month · AI Concierge: $2,499/month · Enterprise Tier: Custom/monthenterprise-ragai-agents
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
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
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
HE

HelixDB

RAG
7.0

Unified graph-and-vector database built for AI agent memory and GraphRAG.

Freemium· GW-10: $86.87 · GW-20: $173.74 · GW-40: $348.21 · GW-80: $696.42 · GW-160: $1,392.84agent-memorygraphrag
SC

Singlebase Cloud

RAG · Multi-model
7.0

AI-native Firebase alternative bundling document DB, vector DB, auth, storage, and built-in AI services.

Freemium· Free tier available; paid plans scale with usagevector-searchrag-apps
CD

Context Data

RAG · Multi-model
6.8

Enterprise data platform for deploying private RAG pipelines without infrastructure plumbing.

Enterprise· Contact salesenterprise-ragdocument-search
TU

TurboVec

RAG
6.8

Rust-powered vector index with 2-4 bit TurboQuant compression for SIMD-accelerated RAG search.

Free· Free, MIT licensedvector-searchrag
CL

ClickHouse

RAG

The open-source columnar database powering real-time analytics — and, increasingly, LLM observability and RAG backends.

Freemium· Open-source self-managed: free. ClickHouse Cloud: from $50/month (usage-based on compute + storage, AWS/GCP/Azure). Enterprise tier available with dedicated support and BYOC options.LLM trace and cost analyticsRAG retrieval with hybrid vector + metadata filters
ME

Meilisearch

RAG · Retrieval engine (Rust); pluggable embedders including OpenAI, Cohere, Hugging Face, Ollama and custom REST models

Open-source, lightning-fast search engine with built-in hybrid and vector search for RAG

Freemium· Cloud: $20/month · Usage-based: $30/month · Resource-based: $23/month · Instance: $18/monthE-commerce product searchDocumentation and knowledge base search
NA

Nomic Atlas

RAG · nomic-embed-text-v1.5, nomic-embed-vision-v1.5 (in-house open-weights); optional integrations with OpenAI, Cohere, and other embedding providers

Interactive maps and embeddings for unstructured text, image, and multimodal data.

Freemium· Starter: Free · Plus: $10/month · Business: $125/seat/month · Enterprise: Custom solutions for security-first organizationsRAG corpus exploration and debuggingEmbedding quality auditing
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
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
TU

Turbopuffer

RAG · bring-your-own embeddings (any provider)

Fast search on object storage

Paid· launch: $16/month · scale: $256/month · enterprise: >=$4,096/monthProduction RAG chatbotsMulti-tenant semantic search
VE

Vectara

RAG · In-house Boomerang (retrieval) and Mockingbird (generation) plus BYOM for GPT, Claude, Gemini, and open-weight LLMs

Enterprise agent platform with built-in retrieval, grounding, and hallucination controls

Enterprise· SaaS: $100K/ year · VPC: $250K/ year · On-prem: $500K/ yearEnterprise knowledge-base searchGrounded customer-support chatbots