IA Checker vs Originality.ai: Which AI Detector Should You Use in 2026?

Positioning

Originality.ai is built for agencies and web publishers. Its pricing page sells credits, team management, full-site scans and scan history measured in months. Its homepage cites third-party studies on detection accuracy and publishes a comparison table against other detectors. That publisher focus is a genuine advantage when you are checking freelancer copy at volume.

IA Checker is a European workspace. Detection is the front door, but the product assumes you may rewrite, review sources, translate or label the result under the EU AI Act before you publish. We do not offer bulk site scanning, a Chrome writing replay, or an enterprise API today, and the table below reflects that honestly.

Neither product proves authorship. Both publish probabilistic indicators. Originality.ai's site explicitly advises using AI detection as one signal and keeping a human reviewer in the loop. We take the same position and print the limits next to every score.

Scorecard

Counted from the 22 rows in the table below, not asserted separately.

1. 10IA Checker ahead
2. 5Tied
3. 7Originality.ai ahead

Feature comparison

Feature	IA Checker	Originality.ai	Ahead
Accuracy
Detection engines	Multiple engines (Advanced and Ultra), with Pangram integration in progress	A single proprietary AI checker, marketed as patented on its site (originality.ai)	IA Checker
Sentence-level attribution	Per-sentence signals with the passages that drove the score	Deep Scan on its site explains why passages were flagged and how to edit them (originality.ai)	Tied
Third-party study citations	Methodology documented on the site; no peer-reviewed publications listed	Its homepage publishes a table of independent and peer-reviewed study results (originality.ai)	Originality.ai
Minimum text length	Checks from a few hundred characters upward	Its site states a 100-word minimum for detection scans (originality.ai)	IA Checker
False-positive guidance	Limits, non-native-writer bias and appeal guidance published alongside every result	Its site advises treating detection as one signal and keeping a human reviewer in the loop (originality.ai)	Tied
Coverage
Text detection	Yes	Yes	Tied
Image and video detection	Dedicated image and video detection routes	Detection on its site is focused on text and uploaded documents (originality.ai)	IA Checker
Bulk and full-site scanning	Documents are checked one at a time	Full site scans and bulk scanning are listed on its pricing page (originality.ai)	Originality.ai
Chrome extension with writing replay	None	Its site advertises a Chrome extension that replays how a Google Doc was written (originality.ai)	Originality.ai
Readability, grammar and fact checking	Grammar checker on paid plans; no dedicated readability or fact-check route	Readability, grammar and a fact-checking aid are listed on its pricing page (originality.ai)	Originality.ai
Pricing
Free tier	Free checks up to 20,000 characters, no account required to try	Its homepage offers limited free scans; its site states there is no free trial of the full product (originality.ai)	IA Checker
Entry paid plan	€4.90 per month for 100,000 words, 25,000 characters per check	Its pricing page lists Pro at $14.95 per month on monthly billing (originality.ai)	IA Checker
Billing model	Monthly word allowance by plan tier	Credit-based: its pricing page states 1 credit equals 100 words (originality.ai)	Tied
Privacy
Retention of submitted text	Kept only for the duration of the requested operation unless you save it	Its pricing page lists scan history for 30 days on Pro and 365 days on Enterprise (originality.ai)	IA Checker
Training on submissions	Not used for model training without express opt-in	Its privacy policy states scan history may be used to improve its models unless the user opts out (originality.ai)	IA Checker
Hosting region	European Union	Its privacy policy states data may be stored in Canada, the United States and other jurisdictions (originality.ai)	IA Checker
Selling personal data	Does not sell personal data	Its policy states it does not sell personal information for money but may share data with analytics partners (originality.ai)	Tied
Workflow
Public API	No public API	API access is listed on its Enterprise plan (originality.ai)	Originality.ai
Team management and shareable reports	Individual accounts; no team seats or shareable scan reports	Team management, taggable scans and shareable reports are listed on its pricing page (originality.ai)	Originality.ai
LMS and educational integrations	None published	Its privacy policy lists a Moodle plugin among its services (originality.ai)	Originality.ai
Compliance
EU AI Act labelling	Built-in labelling tool with the official Article 50 disclosure icons	Not part of the published suite	IA Checker
GDPR posture	EU-established, GDPR-first	Its privacy policy describes GDPR legal bases and Standard Contractual Clauses for transfers (originality.ai)	IA Checker

Accuracy claims and what they can support

Originality.ai leads its marketing with accuracy. Its homepage publishes a table of results from independent and peer-reviewed studies, and names the models its checker is built to detect. That transparency is unusual in this market and worth taking seriously: a claim backed by a cited study is a different kind of claim from a headline percentage with no methodology attached.

The limitation is the same one every detector shares. A study result describes performance on a specific corpus, against specific models, at a specific moment. Originality.ai's own site cautions that shorter text produces less reliable scores and that detection should be one signal among several. We agree with that framing.

Our architectural bet is different rather than louder. Running more than one engine and showing where they disagree surfaces the passages a human should read before acting. A single-model tool cannot show internal disagreement by construction, regardless of how strong its published benchmarks are.

Publisher workflows versus a writing workspace

Originality.ai is shaped around content operations. Its pricing page sells credits that expire monthly, team seats, taggable scans, shareable reports, full-site scans and an API on Enterprise. If your job is to QA a roster of freelance writers before their articles go live, that toolkit is the point of the product.

The Chrome extension is the feature most competitors lack. Its site describes a character-by-character replay of how a Google Doc was written, which is a concrete answer to the false-positive problem that a score alone cannot provide. We do not offer anything equivalent today.

IA Checker assumes a different sequence. You detect, then you may rewrite, check sources, translate or add an EU AI Act label before publishing. That path fits a solo writer or a European team procuring one workspace, not an agency running fifty URLs through a credit meter every Monday.

What happens to the text you submit

For publisher QA, retention is a feature as much as a risk. Originality.ai's pricing page advertises scan history for 30 days on Pro and 365 days on Enterprise, which lets a manager reopen a disputed report weeks later. That history also means submitted text sits on someone else's infrastructure for months unless you delete it.

Its privacy policy goes further on model improvement. Unless a user opts out, scan history and results may be used to train and improve its models. School customers under an institutional agreement get tighter terms, but a freelancer pasting a draft into the public product should read that section directly.

We keep submitted content only for as long as the requested operation needs it unless you explicitly save it, we do not use it for model training without express opt-in, and processing happens in the European Union. For a personal sanity check that trade-off may not matter. For candidate essays, unpublished reports or procurement in the EU, it often does.

IA Checker vs Originality.ai FAQ

Is IA Checker or Originality.ai more accurate?

Neither can claim a permanent accuracy lead honestly. Originality.ai publishes third-party study results on its homepage. On iachecker.com the bet is different: more than one engine, disagreement made visible, and limits printed next to the score so a single percentage is harder to over-read. Test both on writing that resembles what you actually review, including text you know a human wrote, and treat any score as one signal rather than proof.

Does Originality.ai offer a free trial?

Its site states there is no free trial of the full product. It does offer limited free scans on its homepage AI checker. IA Checker offers free checks up to 20,000 characters without an account. If a no-sign-up free check is the whole requirement, compare both on your own material before committing to either paid plan.

How does Originality.ai credit pricing work?

Its pricing page states that 1 credit equals 100 words. Pro includes 2,000 credits per month on monthly billing; Enterprise includes 15,000. Credits renew monthly and expire at the end of each billing period if unused. IA Checker uses a monthly word allowance by plan instead of credits.

Does Originality.ai use submitted text to train its models?

Its privacy policy states that scan history and results may be used to train and improve its models unless the user opts out. It also states that personal data and Student Data are not used to train general-purpose language models. Read the policy directly for the distinction between scan text and account data.

IA Checker vs Originality.ai: which should I choose?

Choose Originality.ai for publisher-scale QA: bulk scans, team workflows, shareable reports, a writing replay extension and an Enterprise API. Choose IA Checker for EU hosting, short retention, multi-engine detection, image or video checks and EU AI Act labelling in one workspace. Both offer limited free checks, so test them on your own writing first.

Read next

• How AI humanizers work
• EU AI labels: the 3 official icons
• Try the AI detector
• All comparisons