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AI Detector

See which sentences read as AI

Paste your text and get a sentence-by-sentence report in seconds — tuned for ChatGPT, GPT-5, Gemini, and Claude. Free to try, no account needed.

Sentence-level reportFree to tryNo account needed

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Arizona State UniversityJohns Hopkins UniversityNYC Department of EducationPenn StateUCLAIITIIM

Detection

See exactly what looks AI-written

Every sentence gets its own score, so you know which lines to rewrite instead of guessing at the whole draft.

62% AI content detected
Machine-written44%
Machine + edits18%
Human-written38%

In today's rapidly evolving landscape, AI has become an essential tool. Many writers rely on these systems to draft and refine their work.

AI likelihood

Opening71%
Middle58%
Closing66%

Grammar

Fix grammar while you're at it

The same pass catches the small mistakes a detector never mentions but a reader always notices.

The results was were consistent across all of the all three trials.

Corrected

See why students choose ProofMyText

MayaComputer ScienceUK
2 days ago

Caught three paragraphs that read as AI

I ran my thesis intro through it and three paragraphs came back as likely AI. I reworked them in my own voice with time to spare — exactly the check I wanted before handing it in.

JonasLawDE
5 days ago

The sentence highlights are the part that matters

I can see exactly what to fix without rereading everything. Two minutes instead of an evening of second-guessing my own paragraphs.

PriyaMarketingUS
1 week ago

Client copy has to sound like a person

This is the check I do before I send anything out. It has saved me from shipping copy that reads like a template more than once.

TomPsychologyUS
1 week ago

Faster than arguing with my tutor

Beats trying to prove a paragraph was mine after the fact. Now I check first and keep the report.

Built for today’s AI models

The checker scores your writing on the patterns large language models tend to leave behind — even pacing, predictable structure, generic phrasing — and highlights the sentences that match. No detector is perfect, so we show a confidence score for each line instead of a single pass or fail.

See how we test

Questions, answered

Is the AI detector free?

Yes. Your first checks are free and need no account. Paste your text and get a sentence-level report right away. Sign in when you want to check longer documents or keep your history.

Which AI models can it detect?

It's tuned for text from modern models like ChatGPT, GPT-5, Gemini, and Claude, and scores the writing patterns they tend to share.

How accurate is it?

No AI detector is perfect, and we don't claim otherwise. Instead of a hard pass/fail label, the report gives a confidence score for each sentence so you can judge the strength of the signal yourself.

Do you store my text?

No. Your text is used only to generate the report. It isn't added to your profile unless you're signed in and choose to save it, and it's never published or sold.

Run your first check now

No account needed for detection. Paste a paragraph and see where it stands.

Check my text