Overview

The service brings rewriting, summarizing, plagiarism checking and AI-focused tools into one platform. That range is useful for writers moving between drafting and revision; readers who need only occasional paraphrasing may be better served by a narrower option. The free registered plan provides a way to use the toolkit without a subscription, though its 8,000 credits reward selective use.

Key features

Seven paraphrasing modes—Simple, Reworder, Creative, Shorten, Formal, Professional and Academic—cover concise rewrites as well as more formal styles. Tone and clarity controls give users additional direction, and document upload with a 3,000-word limit accommodates substantial passages. Rewritten text still warrants review to ensure the meaning and intended voice remain intact.

Alongside paraphrasing, the toolkit includes an article rewriter, summarizer, sentence shortener, plagiarism checker, AI content detector and AI humanizer. More than 20 languages are supported on the platform. This is a practical mix for users who want multiple writing tasks in one place, but the tools have sharply different credit costs: paraphrasing, article rewriting and summarizing use 1 credit per word; plagiarism checking uses 4; AI detection uses 3; and AI humanizing uses 20. That makes humanizing especially demanding on a limited balance.

The API supports 10+ languages, uses bearer-token authentication over HTTPS, and accepts paragraph and lang parameters at POST https://www.paraphrasing.io/api/conversion/rephraseText. It can suit developers seeking a programmatic paraphrasing option. The privacy policy says uploaded content is removed after processing and not shared with third parties; it also describes SSL/TLS protection in transit and safeguards for stored data. Users can request deletion of personal data by email.

Pricing

Paraphrasing.io uses a freemium model, with paid plans from $5/mo. Its free registered plan costs 0.00 USD per free, has no validity period and includes 8,000 credits for paraphrasing, article rewriting, summarizing, plagiarism checking, AI detection and AI humanizing. It is a useful starting point, but frequent checking or humanizing can consume the allowance quickly.

The Lifetime Plan costs 1.82 USD per once, billed $65 one time, and provides 2,000,000 credits for the same six tool categories. Its large balance may suit users who prefer a one-time payment, though it is not a recurring monthly allowance.

Basic Monthly costs 5.00 USD per month, billed $5 /mo, and includes 200,000 credits for 30 days. Pro Monthly costs 8.00 USD per month, billed $8 /mo, and raises the allowance to 300,000 credits for 30 days. Both use the same rates: 1 credit per word for paraphrasing, article rewriting and summarizing, 4 for plagiarism checking, 3 for AI detection and 20 for AI humanizing. Pro is the better fit for higher-volume monthly use; Basic keeps the recurring cost lower but offers fewer credits.

Basic Yearly costs 54.00 USD per year, billed $48 annually, and includes 1,000,000 credits for 365 days. Pro Yearly costs 84.83 USD per year, billed $58 annually, and includes 1,500,000 credits for 365 days. Both cover paraphrasing, article rewriting, plagiarism checking, AI detection, humanizing and summarizing. The larger Pro balance suits heavier annual use, while Basic trades credits for a lower listed price. Payment card details are protected by a PCI-compliant payment provider. Support includes live chat and email for billing, technical issues, bugs, cancellation and refunds.

Platforms

Paraphrasing.io is available on the web, iOS and through its API. The iOS app requires iOS 15.6 or later. The API makes it relevant to developers as well as individual writers, while the web and iOS options cover direct use.

Who it's for

The maker identifies students, educators, researchers, content creators, professionals and businesses as audiences. Students and researchers may value the academic mode and bundled checking tools; professionals and content creators may prefer the range of rewrite styles and the summarizer. The wide audience does not remove the need to budget credits according to the tools used.

Pros and cons

Pros: Seven modes, tone and clarity controls, document upload and a 3,000-word limit provide meaningful flexibility for longer rewrites.
Pros: Paraphrasing, summarizing, plagiarism checking, AI detection and humanizing are bundled, with a free plan and multiple paid credit allowances.
Pros: An API and iOS app extend use beyond the web interface.
Cons: Credit rates vary substantially, and AI humanizing at 20 credits per word can drain balances much faster than paraphrasing or summarizing.
Cons: The iOS app requires iOS 15.6 or later, which excludes older system versions.

Alternatives

Paraphrasing Tools is a broader category to browse if you want to compare services. QuillBot is worth considering for readers who want a free plan with paraphrasing up to 100 words, two modes and basic grammar, across Android, desktop and mobile platforms. RewriteGuru offers a free 800-word rewriting limit plus spell and plagiarism checks at the same word limit, making it a focused option for smaller jobs. Wordtune may suit users who prefer daily rewrite and suggestion allowances plus monthly AI summarizations in its free Basic plan.

Paraphraser.io is another freemium choice, with a Silver plan at 4.55 USD per month and a stated seven-day validity, 10,000 words, a 1,500 paraphrase limit and five modes. Rephraser.co may fit users seeking unlimited paraphrasing and humanizing, with a maximum 4,000-word input on its monthly plan. Paperpal offers a research-and-writing-oriented Prime subscription at 144.00 USD per year. Trinka is an alternative with a free plan and API, extension, desktop and self-hosted platform options. Clever AI Humanizer is a free web option with no fixed monthly word allowance and up to 3,000 words per request, subject to service availability.

Verdict

Paraphrasing.io is a strong fit for writers who want paraphrasing alongside summarizing, checking and AI-focused tools, and who can match their usage to a credit plan. Its breadth and range of allowances are the main reasons to choose it; the steep per-word cost of humanizing and checking is the reason to look elsewhere if those are frequent tasks.

	Paraphrasing.io	Rephrase AI
Free plan	Yes	Yes
Free trial	No	Yes
Paid from	$4.50/mo	$29/mo
Open source	No	No
Platforms	api, iOS, Web	Web
Free plan	Yes	Yes
Paid from	5 /mo	—
Tone controls	Yes	Yes
Clarity controls	Yes	—
Word limit	3,000 words	—
Document upload	Yes	—
API access	Yes	—

Paraphrasing.io vs Rephrase AI

Paraphrasing.io

Rephrase AI