Promptfoo vs LlamaIndex
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 | LlamaIndex |
|---|---|---|
| Our score | 88 | 85 |
| Pricing | Open-source core; free to run in your own workflows. | Open-source core project; no license fee for core framework use. |
| Free plan | Yes | Yes |
| Best for | Teams serious about AI testing discipline, Developers comparing prompts and providers, Organizations building evals into release workflows | Teams building data-heavy AI assistants, Developers who need better structure around retrieval pipelines, Projects with lots of internal documents or knowledge bases |
| Platforms | mac, windows, linux, api | mac, windows, linux, api |
| 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 core project; no license fee for core framework use.
- Free plan
- Yes
- Best for
- Teams building data-heavy AI assistants, Developers who need better structure around retrieval pipelines, Projects with lots of internal documents or knowledge bases
- Platforms
- mac, windows, linux, api
- 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
85Choose LlamaIndex if:
- You are Teams building data-heavy AI assistants
- You are Developers who need better structure around retrieval pipelines
- You are Projects with lots of internal documents or knowledge bases
- You want to start free
FAQ
- What is the difference between Promptfoo and LlamaIndex?
- Promptfoo is an open-source testing and evaluation framework for prompts and models, designed to fit into ci/cd and comparison workflows. LlamaIndex is an open-source framework focused on connecting llms to structured and unstructured data through indexing, retrieval, and agent patterns.
- Which is cheaper, Promptfoo or LlamaIndex?
- Promptfoo: Open-source core; free to run in your own workflows.. LlamaIndex: Open-source core project; no license fee for core framework use.. Promptfoo has a free plan. LlamaIndex 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 LlamaIndex best for?
- LlamaIndex is best for Teams building data-heavy AI assistants, Developers who need better structure around retrieval pipelines, Projects with lots of internal documents or knowledge bases.