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Prompt flow

Build and evaluate LLM application flows

Self-Hosted AI ★ 11.2k stars Medium setup MIT

Prompt flow is an open-source development toolkit from Microsoft for building, testing, and evaluating LLM-powered applications. It provides a visual flow editor, batch evaluation, and tooling to debug prompt pipelines locally.

Official siteSource code

Key features

  • Visual flow authoring
  • Batch evaluation runs
  • Local debugging tools
  • VS Code extension

Strengths

  • Released under the MIT license
  • First-class Docker support for quick deployment
  • Mature project with 11.2k GitHub stars
  • Written in Python

Is Prompt flow secure?

OSV.dev has no published security advisories for Prompt flow's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

Prompt flow replaces

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Health badge

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SelfHostIndex: 75 · good

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