JustDone vs Originality.AI

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Free plan: Only Originality.AI (JustDone has paid plans only)
Public API: Originality.AI has one; not confirmed by us for JustDone
Best fit: JustDone: Students and content writers who already want the full JustDone writing suite · Originality.AI: Content agencies auditing freelance submissions before they pay for them
Platforms: JustDone: Web · Originality.AI: Web, Chrome extension
Trust score: About even — JustDone 90, Originality.AI 89

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

JustDonePlagiarism and AI-detection checking bundled inside a wider AI writing suite, not a standalone scanner.

Originality.AIAI-text and plagiarism detection built for publishers and agencies

Side by side

Fact	JustDone	Originality.AI
Category	AI Detection & Humanizers	AI Detection & Humanizers
Pricing model	Paid	Freemium
Starts at	—	$14.95/mo
Public API	Not confirmed	Yes
Trust score	90 / 100	89 / 100
Platforms	Web	Web, Chrome extension, API
Company	GM Appdev Limited	Originality.AI
Launched	—	2022
Last verified	Oct 15, 2026	Oct 15, 2026

What our research says

JustDone

JustDone's plagiarism checker is useful as one tool inside a bundle rather than a dedicated product: it catches exact and paraphrased matches and links sources, but a shopper who wants only plagiarism checking ends up paying for 30-plus unrelated writing tools at the same time. The site itself says final review and fact-checking remain the user's job.

Pros

Flags both verbatim copies and paraphrased matches, not just exact text
Links each flagged passage to its likely source
Bundled with AI detection and a rewriter in the same editor, so flagged text can be revised immediately

Cons

No standalone plagiarism-only plan; the cheapest tier bundles 35+ unrelated tools
The site itself cautions that users must still verify facts and do a final review manually

Originality.AI

The detector to pick if you are a publisher or agency policing freelance output at volume, because the team history and writing replay matter more than the raw score. A free Basic tier (three AI-only scans a day, 2,000 words each) now lets you test it before paying. Do not use it to accuse a student; no detector is accurate enough to carry that weight.

Pros

Credit model is legible: 100 words per credit, no hidden weighting
API on the higher tier makes batch pipelines possible
Chrome extension works inside Google Docs, where the writing actually happens
Writing replay from revision history is process evidence, not just a score
Free Basic tier allows three AI-only scans a day with file upload, no subscription needed

Cons

Monthly subscription credits expire, so a light month is wasted spend
The jump from $14.95 to $179 a month is a steep single step
False positives on heavily edited or non-native English writing are a documented hazard across every detector
Accuracy benchmarks are largely vendor-run

Which one fits

Choose JustDone if you need

Students and content writers who already want the full JustDone writing suite
Anyone needing paraphrase detection, not just exact-match copying

Choose Originality.AI if you need

Content agencies auditing freelance submissions before they pay for them
Publishers sweeping large archives for machine-written pages
SEO teams screening acquired, syndicated or outsourced content