Langfuse vs Promptfoo
A side-by-side comparison to help you choose the right tool.
89
Langfuse scores higher overall (89/100)
But the best choice depends on your specific needs. Compare below.
| Feature | Langfuse | Promptfoo |
|---|---|---|
| Our score | 89 | 88 |
| Pricing | Open-source self-hosted core plus commercial/cloud options depending on deployment path. | Open-source core; free to run in your own workflows. |
| Free plan | Yes | Yes |
| Best for | Teams shipping LLM apps in production, Developers who need traces and evaluation workflows, Organizations standardizing prompt and experiment tracking | Teams serious about AI testing discipline, Developers comparing prompts and providers, Organizations building evals into release workflows |
| Platforms | web, linux, api | mac, windows, linux, api |
| API | Yes | Yes |
| Languages | en | en |
| Pros |
|
|
| Cons |
|
|
| Visit site | Visit site |
Langfuse
89
- Pricing
- Open-source self-hosted core plus commercial/cloud options depending on deployment path.
- Free plan
- Yes
- Best for
- Teams shipping LLM apps in production, Developers who need traces and evaluation workflows, Organizations standardizing prompt and experiment tracking
- Platforms
- web, linux, api
- API
- Yes
- Languages
- en
- 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
89Choose Langfuse if:
- You are Teams shipping LLM apps in production
- You are Developers who need traces and evaluation workflows
- You are Organizations standardizing prompt and experiment tracking
- You want to start free
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
FAQ
- What is the difference between Langfuse and Promptfoo?
- Langfuse is an open-source observability and prompt-management platform for llm applications, with tracing, datasets, and evaluation support. Promptfoo is an open-source testing and evaluation framework for prompts and models, designed to fit into ci/cd and comparison workflows.
- Which is cheaper, Langfuse or Promptfoo?
- Langfuse: Open-source self-hosted core plus commercial/cloud options depending on deployment path.. Promptfoo: Open-source core; free to run in your own workflows.. Langfuse has a free plan. Promptfoo has a free plan.
- Who is Langfuse best for?
- Langfuse is best for Teams shipping LLM apps in production, Developers who need traces and evaluation workflows, Organizations standardizing prompt and experiment tracking.
- 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.