Why choose Certaffy for AI-writing review?

The useful question is not whether an AI detector can promise perfection. It is whether the tool helps you review the writing in front of you. Certaffy brings academic and business entry points, text and document checking, passage highlights and free counting tools into one website.

Those are practical reasons to explore it. They are not proof that Certaffy is more accurate than every competitor. Here is what the workflow offers and what you should check before relying on a result.

A starting point for different review tasks

Certaffy Academic is the entry point for education-focused review. A student may want to inspect an assignment before submission; an educator may want passages to discuss alongside a draft and its sources. The result should support the institution's process, not replace it.

Certaffy Business provides a separate entry point for workplace content. A team can use detection signals as one input while reviewing a blog, report or other draft. The editor still needs to verify facts, permissions, quotations and compliance with the brief.

Separate workflows are a usability choice, not a claim that every academic or business genre has the same measured accuracy. An essay result should not be assumed to predict performance on emails or speeches.

Start with text; check extraction for documents

The public AI detector gives visitors a way to try a text check. Signed-in analysis supports pasted text and document uploads, including PDF, DOCX and TXT through the supported upload interface. Account and plan limits apply; check the current interface before starting a larger review.

With uploads, verify that the text being analysed matches the file. A PDF's layout can introduce extraction problems even when the file opens successfully. Our PDF checklist explains why tables, columns and scanned pages deserve extra attention. A successful upload is not a guarantee that every word was extracted or scored.

Read passages alongside the summary

Full reports make suspected passages available for closer review. That is more actionable than staring at a number without knowing what to inspect next. Read the surrounding paragraph and compare relevant drafts or source notes.

Keep the outputs separate: the document verdict, an estimated AI-origin share and the amount of text highlighted do not necessarily mean the same thing. A colour is not proof of authorship. See our score guide and highlight guide before interpreting a report.

Useful free tools even before a scan

Certaffy's word counter displays words, characters, approximate sentences and estimated reading time. The separate character, sentence and paragraph tools help with basic length checks. These counters calculate locally in the browser and do not require an AI analysis.

For students, that can help check a draft against an assignment brief. For editors, it can help separate body text from captions and references. Neither word count nor sentence length determines whether writing is human or AI-generated.

Choose on evidence, not a “best” badge

Try representative documents you have permission to use. Include genuine human work, recorded AI output and relevant mixtures. Check false positives as well as detected AI, and record unsupported inputs instead of silently excluding them.

We have not established an independent, like-for-like benchmark proving that Certaffy outperforms Turnitin, Grammarly, Originality.ai or GPTZero. Our comparison worksheet explains how to evaluate tools fairly. If a report could affect a student, worker or contributor, never use it as the only basis for an adverse decision.

Start with a text check, explore the workflow that fits your task, and judge whether the report helps you ask better questions about the writing.

Prepared with AI assistance for Certaffy. Features checked against the current website and implementation on September 29, 2026. Availability depends on the current account and plan; no superiority or perfect-accuracy claim is made.