Artificial Analysis Intelligence Index v5 is a composite evaluation of language models across knowledge work, coding, science, and general knowledge. Its nine evaluations include both agentic tasks and other forms of model assessment; the index assigns 25% of its weight to each of the four categories. Version 5 introduced FrontierCode 2.0 and Terminal-Bench-Science, upgraded several existing evaluations, and uses private test sets or held-out answers for 60% of the index. Artificial Analysis presents the index as a comparative synthesis, while noting that it may not apply directly to every use case.