Compare AI detectors
isGenAI vs Originality.ai: free AI checker alternative
Originality.ai is a paid, credit-based checker for publishers: it scores whether text is likely AI or original, highlights sentences and checks plagiarism, with one free scan before sign-up. isGenAI is free with no account. It does not score style; it shows declared AI use with the exact sentence and reads C2PA, AI labels and saved prompts in images.
isGenAI (isgenai.com) is not affiliated with Originality.ai. Looking for Originality.ai itself? Go to originality.ai.
Content at Scale’s old detector address now redirects away from Content at Scale, as of October 2026, so people searching for it often land on Originality.ai or similar tools. This page compares Originality.ai.
isGenAI and Originality.ai compared
| Question | isGenAI | Originality.ai |
|---|---|---|
| Free use | Free, up to 16,000 characters per check. | One free scan without an account; free scans are capped at 100 credits per account. (source) |
| Sign-up | None. No account, no email. | Needed after the first scan. (source) |
| Paid plans | None needed. | Pro from $12.95 a month billed annually for 2,000 credits (1 credit = 100 words); Enterprise from $136.58 a month billed annually. (source) |
| Method | Finds declared AI use, such as “drafted with ChatGPT”, and shows the exact sentence. It keeps a mere mention of a tool apart from a statement of use and gives no writing-style probability. | Trained models score the whole document as likely AI, original or mixed, with a separate model for sentence highlighting; 100-word minimum. (source) |
| Other checks | Images: C2PA, IPTC labels and saved prompts. Code: declared AI use. | Plagiarism, fact checking, readability and grammar. (source) |
| API | POST /v1/check with a file, URL, text or code. No API key for the documented endpoints. | API with an X-OAI-API-KEY header, listed under Enterprise. (source) |
| Privacy | Pasted text and code are private by default; the exported report leaves the pasted content out. | Scan history may be used to train its models by default; users can opt out. (source) |
| Result | The matching sentences, labelled as declared use, tool mention or code integration. | Likely-AI and original scores, sentence highlights, shareable links and PDF reports. (source) |
When to use which
Choose Originality.ai when
- You run a publishing or SEO team that needs AI scoring and plagiarism checks on every article.
- You want shareable reports and team management on a paid plan.
- You need a score for text that carries no disclosure.
Choose isGenAI when
- You want a free check with no credits to buy and no account.
- You want evidence a writer can see and answer: the sentence that declares AI use.
- You need images or code checked too.
How to do the same job with isGenAI
- Paste up to 16,000 characters of writing or code into isgenai.com/ai-text-detector and choose the writing or code button.
- Read the findings: each one shows the sentence that declares AI use, such as “written with Claude”, or names a tool without claiming it wrote anything.
- Use declared statements as the basis for a conversation with the author, and compare them with drafts, commits or version history.
- If you need a probability that unlabelled text came from a model, use a classifier as a second opinion and treat its score as a lead, not proof.
Questions
Is isGenAI a free Originality.ai alternative?
It is free with no account or credits, but it does not score whether unlabelled text is AI-written or check plagiarism. It finds declared AI use and shows the sentence.
What happened to the Content at Scale AI detector?
As of October 2026, Content at Scale’s detector address redirects to other sites rather than a Content at Scale detector. isGenAI is not connected to any of them.
Does Originality.ai train on my text?
Its privacy policy says scan history may be used to train its models by default and that users can opt out, as of October 2026.
Is isGenAI affiliated with Originality.ai?
No. isGenAI is independent and not affiliated with Originality.ai. Facts here come from originality.ai as of October 2026.
Sources
Every statement about Originality.ai comes from these pages, read as of October 2026. Products change; check the page before you rely on a detail. Product names belong to their owners and are used only to identify them.