The UK AI Security Institute's harness for evaluating frontier models seriously. Built by UK AI Security Institute.
Others in evals and testing
DeepEvalTest what your LLM app says, and run every lesson with no API key.
OpenAI Evals
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.Common questions
Is Inspect AI free to use?
Inspect AI 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 Inspect AI?
Basic Python is enough. Functions, dictionaries and imports cover most of what Inspect AI asks of you.
When should I not use Inspect AI?
When something else in evals and testing fits the job better. The others in that group are listed below.
Lessons for Inspect AI 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 →