Known limitations
Useful evidence is not a verdict.
CouldItBe cannot prove that material was created by AI or by a person. Similar surface patterns can arise for many unrelated reasons.
Do not use this alone for consequential decisions
Do not use a CouldItBe report by itself to accuse someone, assign discipline, determine employment or educational outcomes, establish copyright ownership, or make legal or financial decisions.
Text counterexamples
Editing, translation, templates, accessibility tools, plain-language requirements, non-native writing, quotations, short samples, genre conventions, and mixed contributors can resemble patterns seen in generated text. Humanization can also weaken visible model-associated patterns.
Media counterexamples
Compression, resizing, denoising, mastering, transcoding, camera processing, platform re-encoding, and ordinary editing can create the same indicators measured by the image, audio, and video tools.
Missing evidence is neutral
Absent metadata, Content Credentials, citations, or detectable structure does not establish origin. Present metadata must also be independently verified.
Recommended use
Use reports to organize questions. Compare original files, revision history, trusted publication records, citations, disclosure, and cryptographically verifiable provenance when available.