Promptfoo vs Open WebUI
A side-by-side comparison to help you choose the right tool.
88
Promptfoo scores higher overall (88/100)
But the best choice depends on your specific needs. Compare below.
| Feature | Promptfoo | Open WebUI |
|---|---|---|
| Our score | 88 | 86 |
| Pricing | Open-source core; free to run in your own workflows. | Open-source software; hosting and infrastructure are your responsibility. |
| Free plan | Yes | Yes |
| Best for | Teams serious about AI testing discipline, Developers comparing prompts and providers, Organizations building evals into release workflows | Teams wanting a self-hosted chat UI quickly, Users running local models through Ollama or APIs, Admins who want a friendlier front end for model access |
| Platforms | mac, windows, linux, api | web, linux, mac, windows |
| API | Yes | Yes |
| Languages | en | en |
| Pros |
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| Cons |
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| Visit site | Visit site |
- Pricing
- Open-source core; free to run in your own workflows.
- Free plan
- Yes
- Best for
- Teams serious about AI testing discipline, Developers comparing prompts and providers, Organizations building evals into release workflows
- Platforms
- mac, windows, linux, api
- API
- Yes
- Languages
- en
- Pricing
- Open-source software; hosting and infrastructure are your responsibility.
- Free plan
- Yes
- Best for
- Teams wanting a self-hosted chat UI quickly, Users running local models through Ollama or APIs, Admins who want a friendlier front end for model access
- Platforms
- web, linux, mac, windows
- API
- Yes
- Languages
- en
88Choose Promptfoo if:
- You are Teams serious about AI testing discipline
- You are Developers comparing prompts and providers
- You are Organizations building evals into release workflows
- You want to start free
86Choose Open WebUI if:
- You are Teams wanting a self-hosted chat UI quickly
- You are Users running local models through Ollama or APIs
- You are Admins who want a friendlier front end for model access
- You want to start free
FAQ
- What is the difference between Promptfoo and Open WebUI?
- Promptfoo is an open-source testing and evaluation framework for prompts and models, designed to fit into ci/cd and comparison workflows. Open WebUI is an open-source web interface for using local or remote models with features like rag, admin controls, and multi-model access.
- Which is cheaper, Promptfoo or Open WebUI?
- Promptfoo: Open-source core; free to run in your own workflows.. Open WebUI: Open-source software; hosting and infrastructure are your responsibility.. Promptfoo has a free plan. Open WebUI has a free plan.
- Who is Promptfoo best for?
- Promptfoo is best for Teams serious about AI testing discipline, Developers comparing prompts and providers, Organizations building evals into release workflows.
- Who is Open WebUI best for?
- Open WebUI is best for Teams wanting a self-hosted chat UI quickly, Users running local models through Ollama or APIs, Admins who want a friendlier front end for model access.