Uniwriter is an AI essay writing tool for students that generates essays to UK undergraduate standards, with a free Basic model producing 2:2/C-level essays up to 1,000 words unregistered or 1,500 words registered, and paid Advanced (2:1/B) and Premium (1st/A) models producing essays up to 2,500 and 3,000 words. It offers credit-based subscriptions, an optional grade guarantee, a reference authenticity check, an essay marking service, and a paraphraser. Free-tier essays are published publicly on the site, while paid essays are stored privately in the user's account.