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Haystack vs Weaviate

Haystack or Weaviate? Their plans monthly and yearly, the capabilities their makers state, security and latest updates, side by side — read from the makers' own pages.

In short

  • Both: Choice of models, Self-hosted, API, Builds agents and workflows, Search over your data
  • Only Haystack states: Traces and evaluates
  • Only Weaviate states: Official SDKs, Runs models for you

Haystack

Open-source Python framework for building modular AI agents, RAG systems, search, and other LLM applications.

Plans

Studio

Free

  • 1 workspace
  • 1 user
  • 100 pipeline hours
  • 50 files (max 10MB per file)
  • 2 development pipelines
  • Cloud deployment; Community support on Discord

Enterprise

Price on request

  • Unlimited workspaces, users, files (no size limit)
  • Unlimited development and production (high availability) pipelines
  • Cloud or custom deployment
  • Dedicated account team, solution engineers and private Slack channel
  • SSO, Role-Based Access Control
  • Custom package

Prices checked 2026-09-25 by web search.

Capabilities

  • Choice of models — “Swap models and components without rewriting your system” source
  • Self-hosted — “Run Haystack in your own environment, get dedicated support or extend it with a cloud or self-hosted platform to test, deploy, and operate pipelines at scale.” source
  • API — “Serve pipelines as REST APIs or MCP servers with Hayhooks.” source
  • Builds agents and workflows — “Haystack is an open-source AI orchestration framework built by deepset , enabling Python developers to build production-ready AI agents, multimodal applications, and advanced RAG systems .” source
  • Search over your data — “Build highly performant RAG pipelines with a multitude of retrieval and generation strategies.” source
  • Traces and evaluates — “Use tracing , logging , and evaluation tools to monitor retrieval quality, latency, tool usage, and outputs and iteratively refine your system.” source

Latest updates

About Haystack

Weaviate

Weaviate is an open-source AI database for storing, searching, and retrieving vectorized data in self-hosted or managed deployments.

Plans

Free

Free

  • Always free — 1 cluster per user
  • 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)
  • Basic Support

Flex

  • Starts at $45 /mo
  • Pay-as-you-go, monthly, no commitment
  • Shared cloud cluster with full core DB toolkit + replication
  • Baseline security with RBAC
  • Highly available clusters — 99.5% uptime
  • Query Agent free tier + usage-based; Embeddings usage-based
  • Standard support — next-business-day Sev 1

Premium

Price on request

  • Prepaid contract with predictable spend
  • Choice of shared or dedicated deployment
  • Trusted reliability — up to 99.95% uptime
  • Global coverage on AWS, GCP & Azure
  • Query Agent free tier + usage-based; Embeddings usage-based
  • Enterprise support — as fast as 1-hour Sev 1 + dedicated Technical Account Team

Prices checked 2026-09-25 on the maker’s page.

Capabilities

  • Choice of models — “Seamlessly connect your data with models from a range of providers.” source
  • Self-hosted — “Weaviate’s open source AI database can be self-hosted or run as a managed service in Weaviate Cloud to reduce operational overhead.” source
  • API — “Use SDKs for Python, Go, TypeScript, or JavaScript, or connect to GraphQL or REST APIs.” source
  • Official SDKs — “Use SDKs for Python, Go, TypeScript, or JavaScript, or connect to GraphQL or REST APIs.” source
  • Runs models for you — “Access embedding models hosted in Weaviate Cloud. Simple, pay-as-you-go, GPU-powered.” source
  • Builds agents and workflows — “Pre-built agentic workflows that dynamically interact with your data in Weaviate to perform sync, async, and multi-step tasks.” source
  • Search over your data — “Store, index, and search high-dimensional vectors at any scale. The foundation for search, RAG, and agents.” source

Security

  • HIPAA — “Stay compliant with SOC 2, HIPAA, data privacy, and explainability.” source

Latest updates

About Weaviate