Haystack vs LangFlow

In short

• Both: Choice of models, Self-hosted, API, Builds agents and workflows, Search over your data, Traces and evaluates
• Only LangFlow states: Command line

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

• 2026-09-24 Haystack 3.2.0 (3.2.0)

  Release notes for Haystack 3.2.0

• 2026-09-03 Haystack 3.1.1 (3.1.1)

  Release notes for Haystack 3.1.1

• 2026-08-25 Haystack 3.1.0 (3.1.0)

  Release notes for Haystack 3.1.0

LangFlow

Langflow is an open-source visual builder for creating, testing, and deploying AI agents, workflows, and MCP servers.

Plans

Not read from the maker’s page yet.

Prices checked 2026-09-24 on the maker’s page.

Capabilities

• Command line — “Both packages use the langflow command.” source
• Choice of models — “Swap and compare” source
• Self-hosted — “For more extensive development, you can build Langflow as a dependency or deploy a Langflow server to serve flows over the public internet.” source
• API — “Use the Langflow API to run flows from your application code.” source
• Builds agents and workflows — “Build and configure AI agents with Langflow.” source
• Search over your data — “Langflow | Low-code AI builder for agentic and RAG applications” source
• Traces and evaluates — “Langflow 1.12 released: OpenTelemetry for service health and flow runs” source