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GPTZero — AI detection and writing authenticity checks

AI-generated text detection and writing authenticity checks—freemium scanner; scores are probabilistic, not proof of cheating.

  • AI Detection
  • Writing Authenticity
  • Educator Tools
  • Plagiarism Screening
Publisher
GPTZero
Type
AI Writing Detection
Pricing
Freemium
Reviewed
1 September 2026
Official site

Quick verdict

Use when

  • Quick AI-writing scan
  • Essays / assignments / drafts
  • Probabilistic signal scores
  • Not automatic misconduct proof

Skip when

  • Guaranteed accuracy
  • Legal-grade evidence
  • Heavily edited AI text
  • Punish on scores alone

GPTZero vs common alternatives

How GPTZero stacks up for ai writing detection—pricing tiers, ramp-up time, output scope, and where work is processed. Verify current details on each official site.

Tap a dimension to focus

Pricing

  • GPTZeroThis page
    • Freemium
    • Free scans with limits
    • Paid for volume/teams
  • Originality.ai
    • Freemium
    • Free credits
    • Paid for teams/API
  • Copyleaks
    • Freemium
    • Free basic checks
    • Paid institutions/API
  1. GPTZero — official site
  2. GPTZero — pricing
  3. Originality.ai — official site
  4. Copyleaks — official site

Preview of GPTZero - not the live app. Confirm details on the official site.

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Learn more

Details below the decision summary—features, workflow, and scope notes.

What is GPTZero?

AI-generated text detection and writing authenticity checks—freemium scanner; scores are probabilistic, not proof of cheating.

What it costs

Tier snapshot before you scan documents on gptzero.me.
Free tier
Yes
Pricing summary
GPTZero is freemium: a free tier covers limited scans for individual use, and paid plans raise word limits, add team seats, and unlock advanced features such as batch or API access. Confirm live plan names and scan caps on the official pricing page.

Reviewed on 1 September 2026 · GPTZero — pricing

What GPTZero provides

Core capabilities described on public GPTZero listings.

  • AI-generated text detection

    Scan essays, assignments, and articles for likelihood scores that flag possibly AI-written passages.

  • Browser and document upload

    Paste text or upload files directly in the web dashboard without installing desktop software.

  • Educator-focused workflows

    Built for teachers reviewing student submissions alongside writers checking draft authenticity.

  • Team and API options

    Paid tiers add organization seats and developer API access for integrated screening pipelines.

How to use GPTZero

A practical screening flow on gptzero.me.

  1. Paste or upload the draft

    Submit the student essay, blog post, or report you want to screen—avoid uploading unnecessary personal data.

  2. Review highlighted passages

    Read flagged sections in context; detectors can mislabel edited AI text or polished human writing.

  3. Pair scores with human judgment

    Use results to start a conversation or deeper review—not as automatic proof of misconduct.

  4. Document your classroom policy

    Set clear rules on AI use and explain that detectors are probabilistic tools with known false positives.

Who GPTZero is for

Situations that match an AI writing detection scanner.

  • Teachers and professors

    Educators who need a first-pass signal before discussing AI use with students.

  • Editors and content reviewers

    Teams screening submissions where disclosed human authorship matters.

  • Writers self-checking drafts

    Authors who want to see how automated tools might classify their prose before publishing.

When GPTZero is the right pick

Choose GPTZero when you want a widely known AI detector for quick classroom or editorial triage and you will treat scores as hints, not verdicts. Skip it when you need guaranteed accuracy, legal evidence, or policies that rely solely on automated detection.

Licensing and platform notes

Facts to verify on gptzero.me before you depend on a workflow.
Probabilistic scores only
GPTZero outputs likelihood estimates, not courtroom-grade proof. False positives and false negatives are expected—never rely on a single score alone.
Cloud text processing
Submitted documents process on GPTZero’s servers. Review privacy and retention policies before uploading confidential student work.
Free scan limits
The free tier caps how much text you can scan per period—confirm live limits before grading season workloads.

Frequently Asked Questions

Quick answers about this tool—open a question to read more.