Promptfoo vs OpenAI Tool Search

A side-by-side comparison to help you choose the right tool.

Promptfoo scores higher overall (88/100)

But the best choice depends on your specific needs. Compare below.

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
Included within supported OpenAI API workflows and priced through the underlying model/tool usage.
Free plan
No
Best for
Developers building agents with many available tools, Teams trying to reduce brittle tool selection logic, Experiments in more autonomous agent orchestration
Platforms
api
API
Yes
Languages
en

Choose 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
Read Promptfoo review →

Choose OpenAI Tool Search if:

  • You are Developers building agents with many available tools
  • You are Teams trying to reduce brittle tool selection logic
  • You are Experiments in more autonomous agent orchestration
Read OpenAI Tool Search review →

FAQ

What is the difference between Promptfoo and OpenAI Tool Search?
Promptfoo is an open-source testing and evaluation framework for prompts and models, designed to fit into ci/cd and comparison workflows. OpenAI Tool Search is a built-in openai capability for helping models find and select relevant tools more reliably inside agent workflows.
Which is cheaper, Promptfoo or OpenAI Tool Search?
Promptfoo: Open-source core; free to run in your own workflows.. OpenAI Tool Search: Included within supported OpenAI API workflows and priced through the underlying model/tool usage.. Promptfoo 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 OpenAI Tool Search best for?
OpenAI Tool Search is best for Developers building agents with many available tools, Teams trying to reduce brittle tool selection logic, Experiments in more autonomous agent orchestration.