Designing a Free Text Preview in a Paid AI Video Workflow

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A free lyric preview in a paid media workflow raises the question of what a user has actually approved before paying. The author, maker of AI Rap Videos, describes a flow where users preview and edit four English lyric lines before buying a video. The article argues that a lyric preview, a price quote, and a generated result are distinct promises that need separate labels and states rather than a single ready flag. It proposes tagging preview requests with a revision number so that stale responses, such as one for an old name, are discarded instead of displayed. The author also recommends keeping user-edited drafts separate from automatic updates, preserving drafts after recoverable errors, and clearly updating costs when resolution changes. The server must independently verify payment and rules, since frontend readiness is never proof of purchase.

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