Copyleaks vs QuillBot
A side-by-side look at Copyleaks and QuillBot — pricing, features and where each one wins. Both are reviewed independently on Curata AI.
| Copyleaks | QuillBot | |
|---|---|---|
| Summary | AI content and plagiarism detector that scans text (and images) in one unified check. | AI paraphrasing, grammar and summarizing suite trusted by 50M+ students, writers and professionals. |
| Pricing | Freemium | Freemium |
| Category | Writing | Writing |
| Platforms | Web | Web, Chrome, Word, Google Docs, macOS, Edge |
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Which one should you choose?
Copyleaks
Best for: Freelance writers, editors and publishers who need to verify originality with clear, flat pricing rather than a confusing credit system.
QuillBot
Best for: AI paraphrasing, grammar and summarizing suite trusted by 50M+ students, writers and professionals.
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Read the full Copyleaks review
Copyleaks detects both AI-generated content and plagiarism in a single scan for text, plus AI-only detection for images. It's aimed at freelance writers, editors, publishers and educators who need to verify originality before delivering or accepting work, with flat, predictable monthly or annual tiers rather than a pay-as-you-go credit system.
Read the full QuillBot review
QuillBot is one of the most established AI writing assistants on the market, best known for the paraphraser that made text rewriting mainstream. Today it's a full writing suite: a paraphraser with multiple tone modes, a grammar checker, a summarizer, a citation generator, an AI detector and an AI humanizer. It integrates directly into Chrome, Microsoft Word and Google Docs, so it sits inside the tools writers already use rather than asking them to switch context. QuillBot is especially popular with students, ESL writers and content professionals who want fast, reliable rewrites without opening a general-purpose chatbot. The free tier is generous enough for casual use; QuillBot Premium unlocks unlimited paraphrasing, longer inputs, more advanced tone modes and priority processing — the plan most serious users end up on.