After a month of testing, the author replaced Microsoft Editor with AI tools Copilot and Gemini for proofreading, finding that both caught mistakes that Microsoft Word missed. The author used only the free versions of Copilot and Gemini to proofread already-written text, following a specific prompt. Despite the same prompt, Copilot and Gemini responded differently; Copilot felt more personal and usually understood the flow of a piece better than Gemini, leading to better corrections and phrasing suggestions. Both tools shared AI cliches like overusing the word "actually," using em dashes, and starting responses with phrases like "you hit the nail on the head." Copilot performed better with analyzing editorial pieces and recommending how to rearrange text.