AI must not be used for the generation of non-trivial content that is directly incorporated into the final work. All creative expression and authorship must remain the original contribution of the human creators.
Specifically, your use of AI must be limited to de minimis levels. That is, uses so minor or mechanical that they do not affect the copyrightable authorship of your work and, in practical terms, do not alter its human-created nature.
Acceptable De Minimis AI Use
Research of facts and prior art
Critiquing ideas or high-level story concepts
Checking spelling and grammar
Formatting a table of contents, index, or bibliography, or applying styles
Technical tasks such as sharpening, color correction, or noise reduction of illustrations or photographs
Unacceptable AI Use (Beyond De Minimis)
Using AI to generate portions of final text (e.g., sentences or a paragraph)
Using AI to generate draft text that you then edit
AI-generated design elements or creative content that meaningfully contribute to the final work
AI-generated material that would be copyrightable if created by a human
AI-generated visual art, illustrations, special effects, or imagery