GPTinf vs JustDone (2026): Pricing, Features & Which to Choose

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

Lower starting price
Not comparable
Not comparable: JustDone does not list a price
Free plan
Tie
Neither has one
Higher rating
GPTinf
3.5 against 2.7
Same job?
Yes
Both are Writing tools

Side by side

Compared on	GPTinf	JustDone
Our rating	3.5Better	2.7
Starts at	$19/mo	Not listed
Free plan	No	No
Category	Writing	Writing
Plans	From $19/mo	See pricing
Key features	Rewrites AI-generated text using a non-AI algorithm targeting perplexity and burstiness Eight distinct rewrite modes for different tone and style outcomes Built-in AI detector that scores text for AI-pattern probability Plagiarism checker to confirm originality alongside humanization Browser-based editor with no software installation required	Plagiarism checker and citation generator Summariser, paraphraser and grammar checker AI chat that reads PDFs and websites Quiz generator for revision Chrome extension
Pros	Addresses detection and rewriting in one interface instead of two separate tools Multiple rewrite modes give users a fallback if one style does not pass detection Vendor states plan changes and cancellation take two clicks, with no lock-in	Most of the toolkit is ordinary, useful study software Named legal entity and address, uncommon here Documentation frames output as a draft needing verification
Cons	Independent tests have shown it failing to bypass detectors like GPTZero in some cases Can introduce awkward phrasing or grammatical errors when pushed to evade detection Raises academic-integrity concerns given its bypass-detection use case	Ships an AI humanizer beside an AI detector, defeating both A humanizer's only purpose is making generated text harder to identify No published rates
Company	GPTinf, founded 2023	GM Appdev Limited

Prices come from each vendor's pricing page, last checked 20260819. Check the vendor before you buy.

FAQ

Questions people ask

Is GPTinf better than JustDone?

In our reviews GPTinf scores 3.5 and JustDone scores 2.7. The better pick depends on the job. GPTinf: A paraphrasing engine that rewrites AI-generated text to read as human-written. JustDone: Eleven student writing tools, two of which cancel each other out.

Which is cheaper, GPTinf or JustDone?

GPTinf: from $19/mo. JustDone: see pricing.

Do GPTinf and JustDone have free plans?

Neither lists a free plan.

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