Prompt flow vs promptfoo
A side-by-side comparison of two self-hosted self-hosted ai options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Prompt flow
Build and evaluate LLM application flows
VS
promptfoo
Test, evaluate, and red-team LLM applications
| Feature | Prompt flow | promptfoo |
|---|---|---|
| Category | Self-Hosted AI | Self-Hosted AI |
| License | MIT | MIT |
| Language | Python | TypeScript |
| Setup difficulty | Medium | Easy |
| Min. RAM | 2,048 MB | 1,024 MB |
| Deployment | docker, source | bare-metal, binary, source |
| GitHub stars | ★ 11,216 | ★ 24,063 |
| First released | 2023 | 2023 |
| Replaces | LangSmith, Vertex AI | LangSmith |
Why pick each one
Choose Prompt flow if…
- Released under the MIT license
- First-class Docker support for quick deployment
- Mature project with 11.2k GitHub stars
- Written in Python
Choose promptfoo if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- Mature project with 24.1k GitHub stars
- Written in TypeScript
Frequently asked questions
Is Prompt flow or promptfoo better?
promptfoo is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Prompt flow if its specific feature set fits your needs better.
Are Prompt flow and promptfoo free and open-source?
Yes. Prompt flow is licensed under MIT and promptfoo under MIT. Both can be self-hosted at no software cost.
Can I run Prompt flow and promptfoo with Docker?
Prompt flow: yes. promptfoo: check the project docs for container support.