Scribbr AI Detector

What is Scribbr AI Detector?

Scribbr’s AI Detector identifies text created by popular AI writing assistants, including ChatGPT, Gemini, Copilot, and earlier models such as GPT2, GPT3, GPT3.5, and GPT4. It scans for specific phrases, recurring patterns, and phrasing that doesn’t sound human-written, then assigns a score from 0% to 100% indicating how likely the text was AI-generated, AI-refined, or written entirely by a person.

No AI detector can guarantee full accuracy. Top tools typically reach around 84% accuracy for paid versions and about 68% for free ones. Scribbr emphasizes academic integrity and offers a suite of tools — the AI Detector, a Plagiarism Checker, and a Citation Generator — to help students produce quality academic work and avoid academic dishonesty.

Who created Scribbr AI Detector?

The tool was developed by Scribbr, a company focused on promoting academic integrity. Its detector reliably identifies English texts generated by widely used tools like ChatGPT, Gemini, and Copilot, and is designed to differentiate between human-written, AI-generated, and AI-refined content.

Who is Scribbr AI Detector for?

The tool is useful for students, teachers, academic researchers, content creators, editors, journalists, publishers, proofreaders, marketing professionals, and authors.

How it works

1. Go to Scribbr’s website and open the AI Detector.
2. Paste the text you want to check into the text box.
3. Run the analysis (the button may say “Detect AI Content”).
4. Read the AI score — a percentage between 0% and 100% showing how likely the text was written or edited by AI.
5. Review whether any parts were flagged as AI-generated or AI-refined.

Things to know

• The Premium version offers better accuracy and is more likely to catch content from advanced models like GPT4.
• The tool doesn’t suggest writing improvements — it only indicates whether AI was involved.
• Free AI checks are unlimited, though there’s a limit on how much text you can submit at once.
• No account or sign-up is required.

As with any AI detection tool, accuracy isn’t guaranteed, since AI-generated text is complex and these tools continually evolve.