Weaviate — Developer Tools

Weaviate is an open-source vector database that stores and indexes data based on semantic meaning, not just keywords. It powers AI applications like recommendation engines, image search, chatbots, and retrieval-augmented generation (RAG) pipelines. Teams use it to solve the problem of finding relevant information across massive datasets without relying on exact keyword matches.

What it does

Ingest text, images, or other data, and Weaviate converts them into vector embeddings. You query by meaning — find similar documents, products, or images. Supports hybrid search combining vector and keyword methods. Includes a natural-language Query Agent that translates questions into optimized database queries automatically. Runs on-premise or in Weaviate Cloud.

Best for

Developers and engineering teams building AI search, recommendation systems, or RAG pipelines at scale. Companies needing semantic similarity for large datasets (billions of objects). Ideal for production deployments requiring hybrid search, built-in vectorization (OpenAI, Cohere, Hugging Face), and flexible deployment (self-hosted or cloud). Not designed for non-technical users or simple key-value lookups.

Real use cases

Enterprise knowledge base search with RAG, personalized product recommendations in e-commerce, semantic image and video search, and multi-tenant AI assistants. Trusted by leading startups and enterprises with over 20M open-source downloads and thousands of customers managing billions of vectors in production.

• Vector search — Find similar items by semantic meaning across high-dimensional vectors at any scale
• Hybrid search — Combine vector and keyword search for more accurate results
• Built-in embeddings — Generate vectors from text, images, and more without an external pipeline
• Query Agent — Ask questions in natural language; Weaviate translates intent into optimized queries automatically
• Scalable — Handles billions of objects with sharding and supports tens of thousands of tenants
• GraphQL & REST APIs — Query with flexible filters, aggregations, and multi-tenancy support
• Self-hosted or cloud — Deploy on your own infrastructure or use Weaviate Cloud with managed services

Weaviate pricing: Free (open-source) · Cloud from $25/mo. Billing model: Freemium.

For comparison: the median starting price in Developer Tools is $19.99/month, measured across 301 tools we track. See the full SaaS Pricing Index →

Always Free (SaaS) — $0/mo

Fully managed AI Database to explore Weaviate features. Includes 1 cluster, 100,000 objects, 1 GB memory, 10 GB disk, 1 collection (up to 3 tenants), embeddings (2,000 req/day), Query Agent (1,000 req/mo), and community Slack support.

Flex — Starts at $45/mo (pay-as-you-go)

Zero-commitment entry for prototypes and small use cases. Shared cloud cluster with full core DB toolkit, replication, baseline security (RBAC), 99.5% uptime, Query Agent free tier + usage-based, embeddings usage-based, email support with next-business-day Severity 1 response.

Plus — Starts at $280/mo (prepaid contract)

For production workloads needing added security and enhanced support. Shared cloud cluster, SSO/SAML, 30-day backup retention, 99.9% uptime, Query Agent free tier + usage-based, embeddings usage-based, email support with 8-hour Severity 1 response.

Premium — Starts at $400/mo (prepaid contract)

For teams scaling AI in production needing predictable pricing and high reliability. Choice of shared or dedicated deployment, up to 99.95% uptime, global coverage on AWS, GCP & Azure, Query Agent free tier + usage-based, embeddings usage-based, enterprise support (as low as 1-hour Severity 1) with Technical Account Team.

All cloud plans include a free tier to try. Self-hosted open-source edition is always free.

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