Textio provides real-time writing guidance inside job descriptions, performance reviews, recruiting emails, and interview notes — flagging biased language, weak phrasing, and tone problems as the text is typed. The vendor states its models are trained on over one billion HR documents, including hiring outcomes and performance review data, which it argues produces more HR-relevant guidance than general-purpose language models. The integration story is the functional differentiator: Textio connects directly into ATS platforms like Greenhouse, Workday, and Lever, so guidance appears in the tools recruiters already use. The ceiling appears at organizations that need custom scoring models or want to audit the underlying training data — Textio's AI is a black box, and the self-hosted option does not exist.