Top pick
Originality.ai
Writing & Translation4.1
Checks content for AI writing, plagiarism and factual errors before you publish it.
Best for: Checking freelance and agency content
Top picks
Best AI detector
An AI detector scans a piece of writing and estimates how much of it came from a tool like ChatGPT. Editors, agencies and anyone paying writers use one before they publish.
Picked by Sam Despo on
Why Originality.ai is the top pick
It is the AI and plagiarism checker most used by publishers and agencies, with bulk scanning and an API that school-focused tools lack.
- One scan checks for AI writing, plagiarism, factual errors, grammar and readability.
- Pro is $14.95 a month, or $12.95 billed yearly, for 200,000 words of scanning a month. Credits expire monthly.
- Its AI detector is strict. That suits publishers screening content, but it means honest writers get flagged too, so don't treat a score as proof.
- Built for publishers and agencies, with bulk scans, team accounts and an API. Schools are better served by Turnitin or GPTZero.
Other tools that do this job
Fixes grammar, clarity and tone in your writing, wherever you type.
Rewords, fixes grammar and summarises text, with an AI checker and humaniser built in.
Guides
Questions
What is the best AI detector?
Originality.ai is the top pick. It is the AI and plagiarism checker most used by publishers and agencies, with bulk scanning and an API that school-focused tools lack.
Is there a free AI detector?
Yes. Originality.ai has a free option. There's a free plan, and paid plans start at $14.95/mo.
How much does Originality.ai cost?
There's a free plan, and paid plans start at $14.95/mo.
What are the alternatives to Originality.ai?
Other good options are Grammarly and QuillBot. Grammarly is best for proofreading emails and documents as you type.