UnslopAI edits AI-written drafts so they sound like you, fixing rhythm and phrasing. Free tier with 5 rewrites, paid plans from $9.99 per month.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
UnslopAI is a web-based writing tool that edits AI-generated or AI-assisted drafts so they read less like machine text. It targets the patterns readers notice quickly: repeated rhythm, stock phrasing and uniform structure. The site says it preserves the author's voice and does more than swap in synonyms. The founder built it after AI edits kept sounding alike.
The homepage runs one short paragraph about giving up coffee through several models, including gpt-4.1-mini, claude-sonnet-4-5, gpt-5-mini, claude-haiku-4-5 and gemini-2.5-flash. The outputs share near-identical wording, which the site contrasts with a human-written version. It also offers a Spot the AI quiz where visitors guess which paragraph was written by AI.
According to the site, the engine finds machine-typical phrasing, cuts it, fixes the rhythm of the text, and then checks that the meaning survived. Users paste a draft into the app and receive the edited version with a diff and a before/after score. One newsletter example on the homepage shows a draft scored at 49 percent slop and rewritten into plainer sentences.
A fidelity check runs on every rewrite. Numbers, names and claims have to survive the edit, and the length stays close to the original. If a rewrite fails the check, the user receives the safer version instead. Rewrites the engine leaves unchanged do not count against the quota, and drafts are kept for 48 hours in History before deletion.
The core feature is pattern-level rewriting that addresses cadence, structure and lexical density. Each result includes a diff and a before/after score, so a writer can review what changed instead of accepting a black box. The fidelity check protects names, numbers and claims. The examples section shows real drafts for newsletters, LinkedIn posts, blog openings and cold emails, with a toggle between the original and the result.
Access options go beyond the browser app. Pro includes an API with a single rewrite endpoint and an MCP server that lets Claude, ChatGPT or Cursor call a rewrite tool after an UnslopAI account sign-in. A browser extension for cleaning up text on any page is listed as not out yet. The site also states that text is never used to train models.
UnslopAI is a writing tool that edits AI-written or AI-polished drafts so they do not read as AI at a glance. It changes cadence, structure and phrasing rather than only swapping words, and aims to keep the author's voice.
There is a free tier at $0 with 5 rewrites in total. Small costs $9.99 per month or $99 per year, and Pro costs $29 per month or $299 per year. Quotas are 500 and 2,000 rewrites a month respectively.
Yes. Every account gets 5 free rewrites of up to 1,000 characters each on the same engine the paid plans use. They never expire and no card is required.
The site says every rewrite passes a fidelity check. Numbers, names and claims must survive and the length stays close to the original. If a rewrite fails the check, the user gets the safer version.
Yes, on the Pro plan. The MCP server gives your AI app a rewrite tool it can call, using your UnslopAI account sign-in. Those rewrites draw from the same monthly pool as the app.
The limit is a hard cap. There is no overage billing, so you either upgrade or wait for the next period. Rewrites the engine leaves unchanged are free.
Drafts and rewrites are stored for 48 hours so you can revisit them in History, then deleted. The site states that your text is never used to train models.
Yes, on the Pro plan. You send text to a single rewrite endpoint with a bearer key and get the clean version back. API calls count against the same 2,000 monthly rewrites.