Haystack vs Langflow

Haystack8.9Visit Langflow8.7Visit

Higher score Haystack #5 in LLM Application Development Frameworks 8.9/10 Open source ✓ 0 of 5 features Visit Haystack

vs

Langflow #7 in LLM Application Development Frameworks 8.7/10 Free plan Free plan✓ 0 of 5 features Visit Langflow

• Haystack fits best

  Teams building composable RAG and retrieval pipelines

• Langflow fits best

  Visual prototyping and deployment of AI flows

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Side by side

Feature	Haystack 8.9/10 Visit ↗	Langflow 8.7/10 Visit ↗
At a glance
Editor score	8.9	8.7
Ranking	#5 in LLM Application Development Frameworks	#7 in LLM Application Development Frameworks
Best for	Teams building composable RAG and retrieval pipelines	Visual prototyping and deployment of AI flows
Pricing model	Free	Free
Starting price	Not published	Not published
Free plan	Not published	✓ (best)
Free trial	—	—
Deployment	Self-hosted	Cloud, Self-hosted, Desktop
Support	Community, Docs	Community, Docs
Integrations	183+ integrations	12 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features Haystack 0/5 · Langflow 0/5
RAG support	Not published	Not published
Agent and tool use	Not published	Not published
Workflow graphs	Not published	Not published
Prompt optimization	Not published	Not published
JavaScript/TypeScript SDK	Not published	Not published
Specs
Primary language	Not published	Not published
Open-source license	Not published	Not published
Our review
Pros	Combines keyword and embedding search in composable pipelines Supports document reranking and answers with referenced documents Connects to model providers, vector databases, and monitoring tools	Connect models, tools, components, and outputs in a visual flow builder Build multi-agent and RAG workflows with human approval steps Deploy through APIs, Docker, Kubernetes, cloud, self-hosting, or desktop
Cons	Requires developers to compose and operate their own workflows Its feature set is more retrieval-centered than agent-orchestration leaders Community and documentation are the listed support channels	Voice mode is not available in Langflow Desktop Provider integrations are delivered through installable extensions Support channels are community and documentation
Our verdict	Haystack is an open-source Python framework for developers building LLM applications, RAG systems, AI agents, multimodal applications, and semantic search pipelines. Its composable components let teams shape retrieval, ranking, generation,… Read the review →	Langflow is an open-source, Python-powered framework for building, testing, and deploying AI agents and LLM applications. Its visual flow builder connects models, components, tools, and outputs, making it relevant to developers and teams… Read the review →

Strengths and trade-offs

• Haystack — where it wins

  • Combines keyword and embedding search in composable pipelines
  • Supports document reranking and answers with referenced documents
  • Connects to model providers, vector databases, and monitoring tools

  Where it doesn't

  • Requires developers to compose and operate their own workflows
  • Its feature set is more retrieval-centered than agent-orchestration leaders
  • Community and documentation are the listed support channels

• Langflow — where it wins

  • Connect models, tools, components, and outputs in a visual flow builder
  • Build multi-agent and RAG workflows with human approval steps
  • Deploy through APIs, Docker, Kubernetes, cloud, self-hosting, or desktop

  Where it doesn't

  • Voice mode is not available in Langflow Desktop
  • Provider integrations are delivered through installable extensions
  • Support channels are community and documentation

• Haystack8.9/10 · Open source

  A flexible Python framework for retrieval-centered LLM apps, with hybrid search and cited answers.

  Visit HaystackFull verdict →
• Langflow8.7/10 · Free plan

  A visual, open-source framework for prototyping and deploying AI flows across environments.

  Visit LangflowFull verdict →