Originality.ai is a detection suite for publishers and content teams: an AI checker, plagiarism checker, readability and grammar tools, and a fact-checking aid. DraftCheck is a linter, not a detector. It flags the specific habits that make copy sound machine-written, explains each one and suggests a fix, without guessing who wrote the text. Depending on the job, you can use it alongside Originality.ai or instead of it.
POST /api/check is free for up to 5,000 characters per call with no key. There's an MCP server at /mcp for agents, and an open-source CLI and GitHub Action that can fail a docs pull request above a score you set.DraftCheck can't tell you whether a model wrote something, and it never claims to. A carefully edited AI draft can score 0, and a person who writes "in today's fast-paced world" gets flagged. Its rules are written for English prose. If those limits rule it out for your job, a detector is the right tool.
| Originality.ai | DraftCheck | |
|---|---|---|
| Question it answers | Is this AI-generated or plagiarized? | Which phrases make this read as AI, and how do I fix them? |
| Free use | Free Basic plan: AI detection only, 3 scans per day, up to 2,000 words per scan | Unlimited checks in the browser, no account. Free API up to 5,000 characters per call |
| Paid plans | Pro $12.95/month billed annually ($14.95 monthly), 2,000 credits/month. Enterprise $136.58/month billed annually ($179 monthly), 15,000 credits/month. 1 credit = 100 words of AI checking | Pro $9/month: API key for up to 200,000 characters per call |
| Developer access | API access on Enterprise | Free REST API, MCP server, open-source CLI and GitHub Action |
| Other checks | Plagiarism, readability, grammar, fact-checking aid | AI-writing patterns only |
| Best for | Publishers vetting outsourced content | Editing drafts, content pipelines, CI |
The two tools answer different questions, so they don't conflict. A common split: writers and editors run DraftCheck while revising, and whoever needs an authorship signal runs Originality.ai at intake. Don't read one tool's result as a prediction of the other's. A low DraftCheck score says the text avoids common AI-writing habits; it says nothing about how a detector will score it. And whichever detector you use, treat its result as one signal and have a person review anything flagged.
Originality.ai details on this page come from the Originality.ai pricing page, checked Oct 5, 2026. Prices and plans change, so confirm on their site before you buy. Originality.ai is a trademark of its owner; the name is used here only to describe the product. DraftCheck isn't affiliated with Originality.ai.