Scribbr review

Scribbr's AI Detector is free, unlimited and needs no account, which makes it the easiest tool here for a quick check. Each submission can be up to 1,200 words, and results separate human-written, AI-generated and AI-refined text, with paragraph-level feedback on which passages look AI-written or AI-polished. It supports English, German, French and Spanish, and Scribbr says submissions are not stored or shared. Scribbr is best known for proofreading and plagiarism checks aimed at students, and the detector is positioned for students checking their own papers, educators and bloggers. The limits are clear: no batch uploads, no downloadable reports and no class tools, and the page itself suggests QuillBot's detector for more advanced checks. Teachers handling whole classes should look at GPTZero or Turnitin instead. We compared documented features and published prices.

Who it is for

Students who want a free check without creating an account

Price

Free, unlimited checks up to 1,200 words each.

Perform an unlimited number of AI checks for free, with a limit of up to 1,200 words per submission
Quoted from the vendor pricing page on November 12, 2026.

Key features

• Unlimited free AI checks up to 1,200 words per submission
• No sign-up required
• Separates human-written, AI-generated and AI-refined text
• Paragraph-level feedback on likely AI passages
• Supports English, German, French and Spanish

Strengths and weaknesses

• Strength: Completely free with no account
• Strength: Labels AI-refined text, not only fully AI text
• Strength: Scribbr says it does not store or share submissions
• Weakness: 1,200 word limit per check
• Weakness: No batch uploads, reports or LMS integration
• Weakness: Scribbr's own page points users to QuillBot for a more advanced check

Key facts

• Price: Free
• Words per check: 1,200
• Languages: English, German, French, Spanish

Where it ranks

Scribbr is No. 10 in our Best AI Detectors verdict.