Prompt testing 2023-05-20
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Automated math prompt evaluation.
Generated by ChatGPT

The LLM Prompt Testing tool is a library designed to evaluate the quality of LLM (Language Model Mathematics) prompts and perform testing. It provides users with the ability to ensure high-quality outputs from LLM models through automatic evaluations.

The tool allows users to create a list of test cases using a representative sample of user inputs. This helps reduce subjectivity when fine-tuning prompts.

Users can also set up evaluation metrics, leveraging the tool's built-in metrics or defining their own custom metrics.With this tool, users can compare prompts and model outputs side-by-side, enabling them to select the best prompt and model for their specific needs.

Additionally, the library can be seamlessly integrated into the existing test or continuous integration (CI) workflow of users.The LLM Prompt Testing tool offers both a web viewer and a command line interface, providing flexibility in how users interact with the library.

Furthermore, it is worth noting that this tool has been trusted by LLM applications serving over 10 million users, highlighting its reliability and popularity within the LLM community.Overall, the LLM Prompt Testing tool empowers users to assess and enhance the quality of LLM prompts, improve model outputs, and make informed decisions based on objective evaluation metrics.


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Promptfoo was manually vetted by our editorial team and was first featured on August 20th 2023.
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Pros and Cons


Automated math prompt evaluation
Provides prompt quality assurance
Defines custom metrics
Side-by-side prompt comparisons
Existing workflow integration capability
Web viewer and CLI
Used by over 10M users
Reduces prompt-tuning subjectivity
Supports LLM-graded evaluations
Enable objective decision-making
Facilitates high-quality LLM outputs
Supports representative user samples
Allows prompt and model selection
Trustworthy within LLM community
Enables prompt testing automation
Offers built-in evaluation metrics


No mobile version
No multi-language support
Possibly complex for beginners
No SDK for integration
Poor documentation
Limited built-in metrics
No customer support
Dependency on command line
No real-time evaluation
GitHub dependent


What is the purpose of Promptfoo?
How does Promptfoo test LLM prompts?
Can I define custom metrics in Promptfoo?
How does Promptfoo reduce subjectivity in fine-tuning prompts?
Can I view the comparisons between prompts and model outputs in Promptfoo?
How can I incorporate Promptfoo into my existing test or CI workflow?
Is there a web viewer available in Promptfoo?
Does Promptfoo provide a command line interface?
How many users are served by LLM apps using Promptfoo?
Can Promptfoo be used to evaluate the quality of AI language model prompts?
Is there a representative sample feature in Promptfoo?
How can I use Promptfoo to select the best model and prompt for my needs?
How can Promptfoo improve my LLM model outputs?
Can I create a list of test cases with Promptfoo?
What built-in metrics does Promptfoo offer?
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Can I seamlessly integrate Promptfoo into my workflow?
How popular and reliable is Promptfoo within the LLM community?
Is Promptfoo a trusted tool for testing LLM prompts?
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