Shortlist by what you need
Start here if you know why you are leaving ProofWrite AI.
Want the closest match?
Humanize AI ProMost similar to ProofWrite AI in what it does, its category and its price.
Visit (opens Humanize AI Pro in a new tab)Need a free plan?
InstaTextHas a free plan, rated 3.7 out of 5.
Visit (opens InstaText in a new tab)Want the best rated?
WriteHumanRated 3.7 out of 5 in our review, against 3.9 for ProofWrite AI.
Visit (opens WriteHuman in a new tab)
At a glance
Green means better than ProofWrite AI, red means worse. Prices are starting prices per month.
| Tool | Our rating | Starts at | Free plan | Best for | Compare |
|---|---|---|---|---|---|
 ProofWrite AIBaseline | 3.9 | $9.99/mo | Yes | Rewrites AI text and checks it against seven detectors, all in one pass | |
| Humanize AI Pro | 3.6−0.3 | $4.99/mo$5 less | Yes | Rewrites AI-generated text into human-sounding prose that preserves SEO value. | vs ProofWrite AI |
 StealthWriter | 2.9−1.0 | $20/mo$10.01 more | Yes | Rewrites AI-generated text to defeat AI detectors, and ships a detector to check the result. | vs ProofWrite AI |
 GPTinf | 3.5−0.4 | $19/mo$9.01 more | No | A paraphrasing engine that rewrites AI-generated text to read as human-written. | vs ProofWrite AI |
 Netus AI | 3.6−0.3 | $30/mo$20.01 more | Yes | AI paraphrasing and humanizing tool that rewrites text to read as human-written and pass AI detection. | vs ProofWrite AI |
 JustDone | 2.7−1.2 | Not listed | No | Eleven student writing tools, two of which cancel each other out. | vs ProofWrite AI |
 Undetectable AI | 3.2−0.7 | Free | Yes | Detects AI content across text, image, audio and video, and also rewrites text to evade detection. | vs ProofWrite AI |
| WriteHuman | 3.7−0.2 | $12/mo$2.01 more | No | WriteHuman rewrites AI-generated text to read as human-written and pass leading AI detectors. | vs ProofWrite AI |
| InstaText | 3.7−0.2 | Free | Yes | Interactive editing for non-native writers - it shows what changed and why, rather than silently replacing your text. | vs ProofWrite AI |
The alternatives in detail
In order of how closely each one matches ProofWrite AI.
Humanize AI Pro
3.6$4.99/mo
vs ProofWrite AI$5 less−0.3
Rewrites AI-generated text into human-sounding prose that preserves SEO value.
- Rewrites AI-generated text to reduce detectable machine-writing patterns while preserving original meaning
- Multiple humanization modes and settings across paid tiers
- Free tier for testing before upgrading to a word-volume plan
Entry paid tier at $4.99/month undercuts most competitors in the crowded AI-humanizer category
Operates in an extremely crowded, look-alike market (Humanize AI, HumanizeAI.io, AI Humanize, Humanizer Pro) that makes brand differentiation hard to verify
StealthWriter
2.9$20/mo
vs ProofWrite AI$10.01 more−1.0
Rewrites AI-generated text to defeat AI detectors, and ships a detector to check the result.
- AI humanizer with light, medium and aggressive modes
- Bundled AI detector to verify the output
- Deep Scan sentence-by-sentence analysis
Sentence-level control rather than one blanket rewrite
Its purpose is defeating detection, and students are the first audience named
GPTinf
3.5$19/mo
vs ProofWrite AI$9.01 more−0.4
A paraphrasing engine that rewrites AI-generated text to read as human-written.
- 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
Addresses detection and rewriting in one interface instead of two separate tools
Independent tests have shown it failing to bypass detectors like GPTZero in some cases
Netus AI
3.6$30/mo
vs ProofWrite AI$20.01 more−0.3
AI paraphrasing and humanizing tool that rewrites text to read as human-written and pass AI detection.
- AI Detection Bypasser that rewrites flagged text to read as human-written
- Paraphrasing engine covering 36 languages with adjustable tone and style
- Built-in AI content detector for checking text before publishing
Free Starter tier lets new users test output quality before paying
Reported team size is tiny (around one employee), raising questions about long-term support capacity
JustDone
2.7Not listed
vs ProofWrite AI−1.2
Eleven student writing tools, two of which cancel each other out.
- Plagiarism checker and citation generator
- Summariser, paraphraser and grammar checker
- AI chat that reads PDFs and websites
Most of the toolkit is ordinary, useful study software
Ships an AI humanizer beside an AI detector, defeating both
Undetectable AI
3.2Free
vs ProofWrite AI−0.7
Detects AI content across text, image, audio and video, and also rewrites text to evade detection.
- AI text detection with flagged sections
- Image, audio and video AI detection
- Fake PDF detector
Detection across image, audio and video, not just text
Ships a humanizer for evading detection, with students among named users
WriteHuman
3.7$12/mo
vs ProofWrite AI$2.01 more−0.2
WriteHuman rewrites AI-generated text to read as human-written and pass leading AI detectors.
- Sentence-level rewriting rather than word-for-word substitution
- Built-in AI-detection scoring before and after humanizing
- Published HumanizerBench comparing bypass rates against competitors
Publishes benchmarked bypass-rate comparisons instead of only self-reported claims
No persistent free plan, only a time-limited trial
InstaText
3.7Free
vs ProofWrite AI−0.2
Interactive editing for non-native writers - it shows what changed and why, rather than silently replacing your text.
- Interactive editing with changes shown for approval
- Built for second-language writers
- Clarity, flow and word choice improvements
Showing each change keeps authorial control over meaning
Improves expression, not argument or evidence
FAQ
Questions people ask
Is ProofWrite AI free?
ProofWrite AI has a free plan, and paid plans start from $9.99/mo.
What is the best free alternative to ProofWrite AI?
InstaText is the highest-rated alternative here with a free plan (3.7 out of 5). Other free options: Humanize AI Pro, Netus AI, Undetectable AI.
What is the cheapest alternative to ProofWrite AI?
Among paid plans, Humanize AI Pro has the lowest starting price (from $4.99/mo). If you need it free, start with InstaText.
How did you pick these alternatives?
We match tools on what they do, their category and their price, using the details in our directory. Ratings come from our reviews and reader reviews.