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Langflow vs Promptfoo

Langflow and Promptfoo are both Code Generation tools in our directory. This side-by-side comparison covers pricing, editorial scores, supported platforms, key features and open-source status so you can decide which one fits your needs.

Side-by-side comparison

AttributeLangflowPromptfoo
Product statusStatus not recordedStatus not recorded
VendorLangflow / DataStaxPromptfoo
Rating★ 4.6★ 4.6
PricingFreemiumFreemium
PlatformsSelf-host, Cloud, DesktopCLI, Library, Cloud
Key featuresVisual component flows, Editable Python components, Flow API and MCP interfacesConfiguration-based evaluations, Red-team probes, CI threshold checks
Headquarters—San Francisco, USA
Launched——
Open sourceYesYes

Key differences

  • Langflow and Promptfoo carry the same editorial score (4.6★).
  • Both Langflow and Promptfoo use a Freemium model.
  • Both Langflow and Promptfoo are open source.
  • Langflow runs on Self-host, Cloud, Desktop; Promptfoo runs on CLI, Library, Cloud.

Langflow and Promptfoo at a glance

Langflow

Langflow / DataStax

A Python-based visual builder for AI application flows, with editable components, APIs and MCP integration.

Rating
4.6★
Pricing
Freemium

Editorial verdict

Consider it for visual prototyping and Python extension when your team can own deployment isolation and provider costs.

Strengths

  • Visual flows with editable Python components
  • Documented API and MCP integration
  • Multiple installation and deployment routes

Key features

  • Visual component flows
  • Editable Python components
  • Flow API and MCP interfaces
  • Desktop, container and self-hosted deployment

Best for

  • Prototyping an authorized retrieval or agent workflow
  • Exposing a reviewed flow through an API
Read the full Langflow review →

Promptfoo

Promptfoo

Open-source CLI and library for configured LLM evaluations and red-team tests, with CI integration and separate commercial platform plans.

Rating
4.6★
Pricing
Freemium

Editorial verdict

Consider Promptfoo when you can own the test cases and acceptance criteria; choose a commercial tier for the controls you actually require, and budget model use separately.

Strengths

  • Configuration-based evaluations and provider comparisons
  • Documented CI integration and failure thresholds
  • MIT-licensed CLI and library
  • Commercial cloud and on-premise options

Key features

  • Configuration-based evaluations
  • Red-team probes
  • CI threshold checks
  • Provider output comparisons
  • Free Community and quoted enterprise plans

Best for

  • Checking prompt changes against maintained regression cases
  • Comparing model outputs under the same configured assertions
  • Investigating security failures on authorized LLM applications
Read the full Promptfoo review →

Feature overlap

  • The two tools have no listed features in common — see both feature lists above.
  • Langflow also lists: Visual component flows, Editable Python components, Flow API and MCP interfaces, Desktop, container and self-hosted deployment
  • Promptfoo also lists: Configuration-based evaluations, Red-team probes, CI threshold checks, Provider output comparisons, Free Community and quoted enterprise plans

Frequently asked questions

Is Langflow or Promptfoo better?

Langflow and Promptfoo carry the same editorial score (4.6★), so the better choice depends on your needs — see the feature and platform comparison above.

Which is cheaper, Langflow or Promptfoo?

Both Langflow and Promptfoo use a Freemium pricing model.

Are Langflow and Promptfoo open source?

Yes — both Langflow and Promptfoo are open source.

What platforms do Langflow and Promptfoo support?

Langflow supports Self-host, Cloud, Desktop; Promptfoo supports CLI, Library, Cloud.

What are the main features of Langflow and Promptfoo?

Langflow: Visual component flows, Editable Python components, Flow API and MCP interfaces, Desktop, container and self-hosted deployment. Promptfoo: Configuration-based evaluations, Red-team probes, CI threshold checks, Provider output comparisons, Free Community and quoted enterprise plans.

Visit Langflow →Visit Promptfoo →

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