GPTZero Free Tier Word Limit in 2026: What You Actually Get

GPTZero's pricing page no longer lists a free tier. What the plans cost, the real per-scan limits, and what changed in 2026.

As of 12 September 2026, GPTZero's published pricing page does not list a free tier. The comparison table starts at Premium, 9,99 EUR per month billed annually, with 300,000 words monthly and a 50,000 character cap per scan. A free entry point still exists behind "Get started for free", but its limits are no longer published.

That is a meaningful change, and it is worth understanding before you build a workflow around it.

Key Takeaways

• No free tier appears in the pricing comparison as of 12 September 2026. The table begins at Premium.
• Premium is 9,99 EUR per month billed annually: 300,000 words monthly, 50,000 characters per scan, 50-file batch upload.
• Professional is 19,99 EUR per month billed annually: 500,000 words monthly, 150,000 characters per scan, 250-file batch, LMS integration.
• Character limits, not word limits, cap each scan. 50,000 characters is roughly 8,000 words in typical English prose.
• Third-party figures for the free tier conflict, ranging from 10,000 words monthly to a few thousand characters per scan. None are confirmed on GPTZero's own pricing page.

What the pricing page actually shows

We checked it directly rather than relying on the many round-up posts quoting different numbers.

The plan comparison lists two columns. Premium at 9,99 EUR per month billed annually covers 300,000 words per month, a 50,000 character limit per individual scan, multi-model detection across Gemini, Claude and LLaMA, mixed AI and human text detection, sentence-level highlighting, AI vocabulary scanning, paraphraser and bypasser detection, batch upload of 50 files, downloadable reports and a plagiarism checker.

Professional at 19,99 EUR per month billed annually raises the ceiling to 500,000 words monthly, 150,000 characters per scan and 250-file batch upload, and adds page-by-page scanning, enterprise security, team roles and shared billing, and custom LMS integration for Canvas and Google Classroom.

There is a promotional code advertised for an additional discount, and an API sold separately with its own pricing.

What there is not is a free column. The nav still carries a "Get started for free" link, and GPTZero clearly still offers free scanning, but the specific limits are not stated in the published comparison.

Why the conflicting numbers online

Search for this and you will find confident answers that disagree with each other. One source says 10,000 words per month. Another says 5,000 characters per scan with about 10 scans daily. A third quotes 10,000 characters per scan.

Two reasons for the spread.

The limits have changed repeatedly. GPTZero has adjusted its free offering several times since launch, and posts written in different quarters captured different states. Most are not dated clearly.

Nobody is checking the source. Round-up articles cite each other. A number introduced in 2024 propagates into 2026 posts without anyone opening the pricing page.

So treat any specific free-tier figure you read, including in posts older than this one, as unverified unless it names the date it was checked. We checked on 12 September 2026 and the honest finding is that GPTZero does not publish it.

What the character limit means in practice

The per-scan cap matters more than the monthly allowance for most users, and it is expressed in characters rather than words, which people misread constantly.

50,000 characters on Premium works out to roughly 8,000 words of typical English prose, counting spaces. That covers most essays and articles comfortably but not a dissertation chapter or a long report in one pass. Professional's 150,000 characters is roughly 24,000 words.

If you regularly check long documents, that per-scan cap is the number to plan around, not the monthly total. Splitting a long document across scans also degrades results, because detectors lose reliability on shorter passages.

We covered the long-document problem in checking documents over 20,000 words.

The alternative worth knowing about

If the reason you were searching for GPTZero's free limits is that you want to check text without paying or hitting a cap, there is a simpler answer.

Our free AI content detector gives you up to 50,000 characters per scan, about 8,000 words, on every plan including Free. That is the same per-scan capacity GPTZero charges 9,99 EUR a month for on Premium. It covers ChatGPT, Claude, Gemini, GPT-5, Grok, DeepSeek and LLaMA at 99.99% accuracy on text. You need a free account and you get free credits on signup with no card, and paid plans start at $7.99 a month if you need a larger monthly allowance.

That is the whole positioning, and it is why people arrive here from GPTZero searches. We wrote the full comparison in GPTZero alternatives and the direct head-to-head in GPTOne versus GPTZero.

To be fair to GPTZero: its paid tiers sell things we do not, including LMS integration, batch upload of hundreds of files, and exportable institutional reports. If you are a department buying for a workflow, those matter. If you are one person checking a document, paying for them makes little sense.

What to check before you subscribe

Three things, whichever tool you pick.

The per-scan character cap, not the monthly word allowance. It is the limit you will actually hit.

Whether the false-positive rate is published alongside the accuracy claim. Most vendors publish only the flattering half. Ours is in our lowest false-positive-rate comparison.

Whether the billing is monthly or annual. The headline prices above are annual-billing rates. Monthly billing costs meaningfully more.

How to check this yourself in two minutes

Pricing pages change without announcement, and this one has changed repeatedly. Rather than trusting any figure you read, including ours, here is how to verify the current state.

Open GPTZero's pricing page and look for three things.

Is there a free column in the comparison table? On 12 September 2026 there was not. The table began at Premium. If a free column has reappeared by the time you read this, its stated limits are the authoritative ones.

Is the cap in words or characters? GPTZero expresses per-scan limits in characters and monthly allowances in words. People read "50,000" and assume words. It is characters, roughly 8,000 words of English prose.

Is the price monthly or annual billing? The headline figures are annual-billing rates. Monthly costs meaningfully more, and the difference is large enough to change a decision.

For comparison, Grammarly's own detector page states its basic detector is free, which makes Grammarly the more straightforward free option of the two if a no-cost self-check is all you need.

One broader point about choosing between any of these tools. The specification everyone compares is volume, and the specification nobody publishes is the false-positive rate. That omission matters more than any word cap, because it determines whether a score is safe to act on. The research is unambiguous that the cost falls unevenly: Liang et al., 2023 found detectors flagging writing by non-native English speakers as AI-generated at sharply elevated rates.

A generous word allowance on a tool that misjudges your writing is not a good deal. Check what a detector gets wrong before you check how much of it you get.

One last thing worth planning around if you are choosing a tool for recurring use. Per-scan character caps interact badly with detection reliability on long documents. Splitting a 20,000 word dissertation into four scans does not give you four reliable results, because each segment is assessed independently and detectors behave differently on partial documents than on whole ones. A tool that handles the full document in one pass gives you a more meaningful answer than a tool with a larger monthly allowance but a smaller per-scan cap. Compare the cap, not the allowance.

FAQ

Does GPTZero still have a free plan in 2026?

A free entry point exists via "Get started for free", but as of 12 September 2026 no free tier appears in the published pricing comparison and no limits are stated there.

How much does GPTZero cost?

Premium is 9,99 EUR per month and Professional 19,99 EUR per month, both billed annually, as listed on the pricing page on 12 September 2026.

What is GPTZero's word limit per scan?

The cap is in characters: 50,000 on Premium and 150,000 on Professional, roughly 8,000 and 24,000 words respectively.

Which detector gives the most per scan on a free plan?

GPTOne allows up to 50,000 characters per scan, about 8,000 words, on every plan including Free. GPTZero's 50,000 character cap sits on its paid Premium tier.

Why do different sites report different GPTZero free limits?

The offering has changed repeatedly and most round-ups cite each other rather than checking the pricing page. Prefer figures that state the date they were verified.

Before you pay for a scan

GPTZero's paid product is capable, and its institutional features are real. But if you came here looking for a free way to check a document, its published pricing no longer promises you one, and the 50,000 character per-scan capacity you would be paying for is available on our free tier.

Get that same per-scan capacity on a free plan at GPTOne. Free credits on signup, no card required.

Meta description: GPTZero's pricing page no longer lists a free tier. What the plans cost, the real per-scan limits, and what changed in 2026.