Sentence level breakdown
Every scan highlights the sentences that triggered detection, showing educators, editors and analysts exactly where to look. A document wide percentage alone gives a reviewer very little to act on.
Content authenticity
The accurate AI Detector.
Check AI generated content from ChatGPT, GPT-5, Claude, Gemini and more. Proofademic gives educators, institutions, publishers and enterprise teams clear document scores, sentence level signals and scalable review workflows.
EducationEnterpriseFirst 1,000 words freeNo credit card
AI detection
Try the AI checker with your first 1,000 words free.
Check essays, articles, reports and other text for AI generated content. Proofademic combines current model coverage with sentence level context, so reviewers can inspect what drove the result.
Latest model coverage
Detect text from major language models, with coverage updated as models change.
ChatGPTGPT-5ClaudeGeminiOther LLMs
Paraphrase Shield
Identify rewritten AI text while preserving the context a human reviewer needs.
Academic calibration
Calibrated on academic writing to reduce false positives on citation heavy essays, technical papers and formal prose, with support for 23 languages.
The suite
More than an AI detector.
AI detection, plagiarism checking and writing-quality review in one place, so a single scan answers more than one question.
Flagship detector
AI Text Detector
Identify AI-written passages from major language models and inspect the sentence-level evidence behind the document score.
Run a free AI scan →Submitted text / excerpt 01
Generative systems can produce fluent academic prose with highly predictable phrasing. Reviewers still need the surrounding context, sources and drafting process before reaching a conclusion.
Analysis
High likelihood of AISentence-level evidence
LIKELY AI
Predictable phrasing and low variation.
Predictable phrasing and low variation.
LIKELY HUMAN
Specific context and varied syntax.
Specific context and varied syntax.
Browser tool coming soon
AI Image Detector
Inspect submitted images for generative patterns and review the supporting signals in context. The AI Image Detector API is available now for institutions, publishers and platforms building visual review into their own workflows.
Use the available API →
Interface previewVisual signal reviewTexture consistencyCompression patternGenerated detail
Available now
Plagiarism Checker
Compare writing against online sources and academic databases, then separate source matches by risk so reviewers can distinguish quotation, citation issues and possible copying.
Explore plagiarism checking →Originality report / excerpt 023 sources
The review found that institutional policy works best when detection evidence is considered alongside drafting history, source use and the writer’s prior work.
18%Matched text
HIGH RISK
Close wording · Source 01
Close wording · Source 01
LOW RISK
Cited phrase · Source 02
Cited phrase · Source 02
Coming soon
Grammar Checker
Catch grammar, spelling, punctuation and clarity issues before submission or publication while keeping the writer’s meaning and voice intact.
Join product updates →Writing review / paragraph 044 suggestions
The findings demonstrates a clear pattern, but the conclusion is somewhat difficult to understand without additional context.
AgreementChange “demonstrates” to “demonstrate.”ClarityConsider “unclear” for a more direct sentence.
Model coverage
Works with ChatGPT, GPT‑5, Gemini, Claude and more.
Proofademic analyses linguistic structure, semantic patterns and sentence variation. The result pairs a confidence score with the signals behind it.
- Confidence for each detected segment
- AI and human-likelihood passages separated
- Frequent updates for new model output
- Plagiarism checking in the same scan
Signal analysis / excerpt 01Confidence
94%AI GENERATED
Confidence based on the combined linguistic pattern analysis below.
Predictable phrasing
0.88Generic structure
0.91Sentence variation
0.22Human-like rhythm
0.18How it works
How Proofademic's AI detector works.
Proofademic combines multiple detection technologies, then keeps you in control. Results are designed to start a conversation, not end one.
Upload document
Paste text or upload an essay, article or research paper securely.
essay_final.docxUPLOADED
Run analysis
Scan for AI-generated patterns, plagiarism and paraphrased AI text.
ANALYSING64%
Read the report
Review confidence, originality insights and flagged sentences together.
LIKELY AI6 SENTENCES
Take action
Use the evidence to guide a conversation, a resubmission or a closer look.
REPORTPDF
One standard
One evidence standard across every team.
Give educators, editors, analysts and integrity teams the same sentence-level evidence, review policy and reporting workflow without forcing each department to invent its own process.
Batch reviewCourses + content sets
API + LMSExisting systems
Role-basedConsistency at scale
Batch Scan
Review large content sets in one pass.
Upload a class submission, publishing queue or enterprise document set and triage results from one dashboard. Sort by risk, inspect sentence-level evidence and export reports for review records.
Designed for consistent AI detection across courses, departments, editorial teams and high-volume workflows.
SubmissionAI signalMatches
ENG204_Alvarez.pdf12% LOW3›
ENG204_Chen.docx78% HIGH0›
ENG204_Dubois.pdf24% LOW8›
ENG204_Khan.docx64% REVIEW2›
ENG204_Martin.pdfSCANNINGPending·
Responsible detection
Evidence belongs in context.
AI detection is one signal in a careful review. Proofademic is built to show its work, protect submitted content and help education and enterprise teams make measured decisions.
Confidential review
Submitted content is handled as sensitive material, with privacy considered at every step.
Academic calibration
Detection is tuned for citations, technical language and formal academic patterns.
Clear evidence
Sentence-level results let you inspect the text behind the score.
Human judgment
Reports support a conversation or review, not a final verdict on their own.
Developer platform
One API platform. Multiple detection systems.
Connect Proofademic’s text and image detection to your LMS, editorial pipeline, trust workflow or product. Manage keys and usage in one platform as new APIs are added.
// AI Image Detector API curl -X POST \ https://developer-portal.proofademic.ai/api/image-detector/predict/ \ -H "X-API-Key: YOUR_API_KEY" \ -F "file=@campus.jpg" { "prediction": "real", "confidence": 0.9964, "probabilities": { "real": 0.9964, "fake": 0.0013, "inpainting": 0.0022 } }
Available APIAI Text DetectionDocument-level confidence with sentence-level evidence.
View text API docs →
Available APIAI Image DetectionReal, AI-generated and inpainting verdicts with probabilities.POST /api/image-detector/predict/
Developer platformKeys and usageManage API access, scopes, projects and consumption.platform.proofademic.ai ↗
DocumentationBuild the integrationStart with API references, request formats and responses.docs.proofademic.ai ↗Who it is for
AI detection for education, publishing and enterprise.
Check essays, articles, reports and high-volume content with one AI detector and a shared review standard.
Give every marker the same standard.
Equip teachers and integrity officers with sentence-level evidence they can inspect and explain.
Explore educator solutions →Check writing before submission.
Review essays for AI signals, plagiarism and writing issues before handing work in.
See student solutions →Roll it out across departments.
Use role-based access, Batch Scan and LMS-ready workflows across courses and faculties.
Explore institutional AI detection →Review content at production scale.
Check articles, reports and user-generated content through team workflows or detection APIs.
Explore publishing and enterprise →Planning a larger rollout?
Talk to us about seats, batch review, LMS integration, APIs and enterprise content workflows.
Pricing
Choose your AI detector plan.
Start with a one-time 1,000-word allowance. Every plan includes sentence-level evidence and plagiarism checking.
Free
$0
1,000 words one timeUp to 1,000 words per scan
Test the complete sentence-level report before choosing a paid plan.
Run a free scanEssential
$15 / month
200,000 words / monthUp to 3,500 words per scan
For students, writers and occasional content checks.
Start EssentialPremium
$25 / month
400,000 words / monthUp to 8,000 words per scan
Higher limits for educators, editors and regular reviewers.
Start PremiumProfessional
$45 / month
600,000 words / monthUp to 25,000 words per scan
Batch workflows for teams reviewing content at higher volume.
Start ProfessionalInsights
AI detection, originality and review guides.
Plain-language guidance for educators, writers, publishers and teams working with AI-assisted content.
Accidental plagiarism: what it is and how to prevent it
A practical framework for separating citation mistakes, source overlap and intentional copying.
Read the guide →
Plagiarism checker vs. AI detector
What each system measures, where they overlap and why many workflows need both.
Compare the systems →
AI detection and responsible review
How to combine detection signals, source context and human judgment into a measured decision.
Explore responsible use →Common questions
What to know before you scan.
Paste text into Proofademic or upload a document. The AI detector returns an overall score plus a sentence by sentence breakdown for review.
Proofademic combines academic calibration with sentence level signals, Batch Scan and APIs for education, publishing and enterprise workflows.
Yes. Coverage includes major language models and is updated as models change.
Yes. AI detection and plagiarism checking can work side by side, with source matches separated by risk for review.
The AI Image Detector API is available now for developers and platforms. A browser based image detector for individual users is coming soon.
In Proofademic's March 2026 evaluation, the detector recorded a 0.2% document false positive rate on a held out set of 4,200 fully human authored academic texts. Results are probabilistic and should support, not replace, human review.
New users receive one free 1,000 word scan with no credit card required. Paid plans provide higher monthly allowances and per request limits.
No. A detector result is a signal, not a verdict. Review the result alongside source material, process, prior work and the policy that applies.
Proofademic can review essays, research papers, articles and reports in 23 languages, one at a time or in larger sets through Batch Scan and APIs.
Ready when you are
Review AI generated content with confidence.
Start with 1,000 words free, or talk to us about team access, Batch Scan and detection APIs.