Grubby AI review: our take
Grubby AI rewrites machine-written English until detectors such as GPTZero, Originality.ai and ZeroGPT score it as human, and its own messaging speaks to students first and bloggers second. The free allowance is 300 words a month, enough to judge the output and little else. Paid tiers are measured in words, 10,000 on Essential and 30,000 on Pro, and the plan called Unlimited carries an asterisk and a daily cap of 30,000 words.
For a publisher it is one step bolted onto a draft written elsewhere, in English only. Writecream writes the draft itself and gives away 20 credits, about 40,000 characters, on its free plan.
What Grubby AI does
Grubby AI rewrites AI-generated text so that AI-detection tools such as GPTZero, Originality.ai, ZeroGPT and Turnitin score it as human-written. It works in English only and also offers an AutoTyper feature. The site's messaging targets students first, with a secondary mention of bloggers and SEO marketers.
Who Grubby AI is for
Best for
- users rewriting AI drafts to read less like machine text
Not for
- non-English content: the FAQ says it humanizes English only
- SEO research or analysis: it is a rewriting tool only
Grubby AI features
- F1AI text humanizer
- F2AI detector bypass (GPTZero, Originality.ai, ZeroGPT, Copyleaks)
- F3Turnitin guarantee
- F4AutoTyper
- F5Plagiarism-free rewrites
Grubby AI pricing and plans (2026)
| Plan | Monthly | Billed yearly, per month | What it includes |
|---|---|---|---|
| Free | $0 | — | 300 words free per month |
| Essential | — | — | 10,000 words/month, 500 words per input, 5,000 AutoTyper words |
| Pro | — | — | 30,000 words/month, 1,500 words per input, 10,000 AutoTyper words |
| Unlimited | — | — | 'Unlimited*' words/month, 2,500 words per input, 30,000 words daily rate limit |
| Enterprise | — | — | unlimited words, 50,000 words daily rate limit |
Free plan: yes. Prices as listed by the vendor, before tax; they change, so check the pricing page before you buy.
Grubby AI interface
Grubby AI FAQ
- Does Grubby AI have a free plan?
- Yes, Grubby AI has a free plan.
- What are the alternatives to Grubby AI?
- Tools that cover the same jobs include Yahini, Jasper, ProWritingAid, Surfer (Positive Surfer).