Copyleaks is a text-authenticity and plagiarism-detection company founded in 2015 by software developers Alon Yamin and Yehonatan Bitton. What started as a plagiarism checker for schools and publishers added AI-content detection in 2023 as large language models entered mainstream writing workflows.
The platform scans submitted text, and now images, against a large index of web and academic sources, flagging matched or paraphrased passages while separately scoring the likelihood that content was AI-generated across languages. Detection results run on a credit-based system, where one credit covers roughly 250 words or one image scan.
Educational institutions, publishers, and businesses needing content-authenticity checks make up the core market, alongside individual writers checking their own work. A free tier covers around 10 pages a month, with Personal and Pro subscriptions starting near $9.99 a month and custom Enterprise and Education plans for larger organizations.
Copyleaks starts at $9.99, which is right at the Writing median of $10 a month across the 86 priced tools we list in that category.
The cheapest paid option in Writing starts at $1.99 and the most expensive at $390.
69% of Writing tools in the directory offer a free tier, and this is one of them.
Compared against every priced listing in Writing, recalculated as the catalogue changes. Method and the full market breakdown are in our AI tool pricing study.
Inspects a draft for hidden character artifacts and AI-style tells, shows the evidence, then rewrites toward your own voice.
Reads the email you received and drafts the reply, in Gmail or Outlook.
Pick your model – Gemini, Claude, GPT, LLaMA, or DeepSeek – and generate a full SEO article with research, charts, and Flux or Imagen visuals, complete with live web citations.
GPT-4 handles keyword research, writes 50+ SEO-optimized articles a month, and publishes straight to WordPress, Shopify, or Webflow – then keeps optimizing based on your actual Search Console rankings.
