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Haystack Review 2026 — Production-Grade RAG Framework by deepset

Haystack by deepset is the open-source NLP framework for production RAG pipelines. Pipeline-as-YAML, 50+ integrations, built-in evaluation. Free Apache 2.0 license.

Haystack Review 2026 — Production-Grade RAG Framework by deepset

In inglese

Haystack lets developers compose explicit pipelines from retrievers, routers, memory layers, tools, evaluators, and generators. It supports agents, retrieval-augmented generation, multimodal applications, semantic search, question answering, and text-to-SQL.

AI engineers, developers, and data scientists use it to build and deploy customizable AI systems. The open-source framework is free to run but does not include the managed infrastructure, governance, observability, or enterprise support available through Haystack Enterprise Platform.

Features

  • Compose modular pipelines for retrieval, routing, memory, tools, evaluation, and generation
  • Build multi-step AI agents with explicit tool invocation and reasoning logic
  • Create advanced retrieval-augmented generation applications
  • Support multimodal applications, semantic search, question answering, and text-to-SQL
  • Swap models, providers, data stores, and infrastructure without rewriting applications
  • Deploy in cloud or self-hosted environments
  • Apache License 2.0 open-source framework

Use cases

  • Build enterprise knowledge assistants grounded in internal documents
  • Create RAG pipelines for search and question answering
  • Develop agents that use tools, memory, and multi-step workflows
  • Deploy semantic search across structured and unstructured data
  • Test and evaluate AI pipelines before production deployment

Pros

    Cons

      Latest updates

      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

      Get it

      Pricing

      Starting price
      Free
      Prices checked
      2026-09-25
      Read
      by web search

      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
      Official website