Academic Integrity Platform

Free AI Checker for Teachers

The only AI detector for teachers and educators built specifically for academic work. Proofademic analyzes student essays, research papers, and assignments sentence by sentence so you know exactly which parts were written by AI. Start with 1,000 words free.

No Credit Card Required 1,000 Words Free Batch Scan

AI detector

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How Our AI Detector Works for Teachers

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Paste or Upload

Copy a student's essay into the editor, or upload a .docx or PDF file directly. No formatting changes needed, Proofademic handles it all.

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Proofademic Analyzes Every Sentence

Our detection engine scans each sentence individually, checking for patterns from ChatGPT, Claude, Gemini, and other AI models.

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Review Flagged Sections

Get a color-coded report showing exactly which sentences are likely AI-generated, with confidence scores for each one. Make grading decisions with clarity, not suspicion.

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Take Action With Confidence

Use the detailed breakdown to guide your next step: a private conversation with the student, a resubmission request, or simply grading the work. You have the evidence, not just a hunch.

Why our approach works

Proofademic combines multiple detection technologies to achieve unparalleled accuracy. Our system analyzes linguistic patterns, semantic structures, and contextual relationships to identify both AI-generated content and traditional plagiarism. This multi-layered approach ensures that academic integrity is maintained even as AI technology evolves.

Built for Educators

See Exactly Where AI Wrote the Paper

Most AI detectors give you a single percentage score and leave you guessing. Proofademic is different.

Every sentence gets its own confidence score, so you can see precisely which sections a student wrote and which sections an AI model likely generated. That matters when you're deciding if a paper needs a conversation or a grade.
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Sentence-by-sentence AI detection with individual confidence scores

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Highlights AI-written sections in the original text

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Works with essays, research papers, lab reports, and assignments

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Detects content from ChatGPT, Claude, Gemini, and more

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Why Teachers Choose Proofademic

Every feature is designed for the way teachers and educators actually work. Proofademic is the best AI checker for essays, research papers. Review a single assignment or an entire class of submissions.

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Essay & Assignment Scanning

Paste or upload any student submission. Proofademic checks essays, research papers, discussion posts, and take-home exams for AI-generated content in seconds.

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Paraphrase Shield

Students don't just copy-paste from ChatGPT anymore. Proofademic catches AI writing that's been reworded, paraphrased, or run through humanizer tools to look original.

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Sentence-Level Scoring

No vague percentages. Every sentence gets an individual confidence score, so you can pinpoint exactly which parts of a paper were likely written by AI.

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    Batch Scan

    Got a full class of papers to check? Upload multiple files at once and scan them all in one go. No need to paste essays one at a time.

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    Private and Confidential

    Student work stays private. Proofademic's AI text detector scans in secure, ephemeral environments. We never store essays, share submissions, or use student writing to train AI models.

    Multi-Language Support

    Teaching ESL or multilingual classes? Proofademic detects AI-generated text in 23 languages with the same sentence-level accuracy.

    For Every Classroom

    Works With Every Type of Assignment

    If you teach high school English or graduate-level research methods, Proofademic handles it. Our free AI essay checker analyzes academic writing at every level, from five-paragraph essays to 20-page theses.

    You don't need your school/institution to buy a license. Any teacher or educator can sign up individually, start with 1,000 words free, and check student work today.
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    Essays, research papers, and theses

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    Lab reports and book reviews

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    Take-home exams and homework assignments

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    Discussion posts and short-answer responses

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    Built for Educators at Every Level

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    K-12 Teacher

    Need a free AI detector for teachers that handles everyday classwork? Proofademic's free tier covers most student submissions, from homework to short essays.

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    University Professors

    Review theses, research papers, and dissertations with sentence-level precision. Identify which sections need a conversation with the student.

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    Teaching Assistants

    Grade stacks of papers faster with confidence. Use Batch Scan to upload an entire class at once and get clear AI detection reports for each student.

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    Academic Integrity Officers

    Support fair assessment across your institution. Proofademic's detailed reports give you the evidence needed to handle academic integrity cases with transparency.

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    Questions Teachers Ask About AI Detection

    Yes. Proofademic offers a free tier that lets any teacher check up to 1,000 words with no credit card required. You get the same sentence-level detection and confidence scoring as paid plans. For teachers who need to check more student work, plans start at $8 per month with 200,000 words.

    Paste the student’s text into Proofademic or upload the .docx or PDF file directly. The AI detector analyzes every sentence individually and flags sections that show patterns consistent with ChatGPT, Claude, and other AI writing tools. You’ll see a confidence score for each sentence, so you can identify exactly which parts were likely AI-generated instead of relying on a single overall percentage.

    Yes. Free AI detector for teachers like Proofademic are specifically trained to recognize patterns in ChatGPT-generated text, including the latest GPT-5 model and all earlier versions. Proofademic also detects writing from Claude, Gemini, and other major AI models. The key advantage for teachers is sentence-level detection. You see exactly which sentences were flagged, not just a vague score.

    Many schools and universities now use AI detection tools as part of their academic integrity process. Some institutions use Turnitin’s AI detection feature through existing contracts, while individual teachers often use standalone tools like Proofademic. Proofademic is designed so that any individual teacher can sign up without waiting for a school-wide purchase. You can start checking student work today.

    The best AI detector for teachers needs to be accurate, affordable, and easy to use without an institutional contract. Proofademic checks all three. Its detection engine is built specifically for academic writing, it includes a paraphrase shield that catches rewritten AI content, and any teacher can sign up individually with 1,000 words free.

    Basic paraphrasing and synonym swapping can fool some detectors, but Proofademic’s paraphrase shield is designed to detect AI content even after it has been rewritten. The detector looks for deeper linguistic patterns that survive paraphrasing. Things like sentence structure, semantic flow, and statistical markers that are characteristic of AI models, not human writers.

    No. Proofademic processes all text in secure, ephemeral environments. Student submissions are analyzed and then discarded. We never store essay content, share it with third parties, or use it to train AI models. Student privacy is built into how the system works, not just a policy on a page.

    No. Unlike Turnitin, which typically requires an institutional contract, Proofademic is available to individual teachers. You can create an account, start with the free tier, and upgrade on your own if you need more capacity. No purchase orders, no IT department approval, no waiting.

    Start Checking Student Work for Free

    1,000 words. No credit card. Sentence-level AI detection built for educators. See for yourself why teachers are switching to Proofademic.