  Given AI systems like ChatGPT can generate content that is indistinguishable
from human-made work, the responsible use of this technology is a growing
concern. Although understanding the benefits and harms of using AI systems
requires more time, their rapid and indiscriminate adoption in practice is a
reality. Currently, we lack a common framework and language to define and
report the responsible use of AI for content generation. Prior work proposed
guidelines for using AI in specific scenarios (e.g., robotics or medicine)
which are not transferable to conducting and reporting scientific research. Our
work makes two contributions: First, we propose a three-dimensional model
consisting of transparency, integrity, and accountability to define the
responsible use of AI. Second, we introduce ``AI Usage Cards'', a standardized
way to report the use of AI in scientific research. Our model and cards allow
users to reflect on key principles of responsible AI usage. They also help the
research community trace, compare, and question various forms of AI usage and
support the development of accepted community norms. The proposed framework and
reporting system aims to promote the ethical and responsible use of AI in
scientific research and provide a standardized approach for reporting AI usage
across different research fields. We also provide a free service to easily
generate AI Usage Cards for scientific work via a questionnaire and export them
in various machine-readable formats for inclusion in different work products at
https://ai-cards.org.
