OpenAI's eval framework and a registry of evals other people wrote. Built by OpenAI.
Others in evals and testing
DeepEvalTest what your LLM app says, and run every lesson with no API key.
PromptfooTest your LLM app from the command line, with no API key.
RAGASGrade a RAG bot's answers and its retrieval, with no API key.
BraintrustCommon questions
Is OpenAI Evals free to use?
OpenAI Evals is open source and free to run yourself. You still pay whichever model provider you point it at, and this tutorial is free with no signup.
Do I need to know Python to use OpenAI Evals?
Basic Python is enough. Functions, dictionaries and imports cover most of what OpenAI Evals asks of you.
When should I not use OpenAI Evals?
When something else in evals and testing fits the job better. The others in that group are listed below.
Lessons for OpenAI Evals are being written. Meanwhile the APIs for AI tutorial covers the same ground: state, tools, loops, memory and human approval. Most of it carries straight over.
Start the APIs for AI tutorial →