Students and writers paraphrasing original work for clarity or anti-plagiarism
Writers and freelancers whose AI-generated text must pass AI detectors
QuillBot is the legacy paraphraser, built for rewording human-written text. WriteHuman is the new generation, built specifically to make AI-generated text pass detectors like GPTZero, Turnitin, and Originality.ai. They overlap in marketing copy but solve different real problems. According to the G2 grammar checker category, both sit in established categories with active user reviews and side-by-side feature data.
We compared QuillBot and WriteHuman on the same workload across pricing, feature depth, output quality, and the actual workflow each tool is built for. Pricing was verified against each tool's official pricing page in May 2026.
Short answer: WriteHuman is the right pick for the audience this comparison serves; QuillBot earns the spot only when its specific advantage matches your work. See the broader AI-generated content overview on Wikipedia for context. Detailed breakdown below.
Side by side
QuillBot
Score
4.2 / 5
Price
Free plan
Students and writers paraphrasing original work for clarity or anti-plagiarism
Best-in-class AI paraphraser with grammar checker, plagiarism detector, summarizer, and citation tools. Premium at $4.17/mo billed annually. Strong for paraphrasing original text but not designed to bypass AI-content detectors on GPT or Claude output.
WriteHuman
Our pick
Score
4.5 / 5
Price
Free plan
Writers and freelancers whose AI-generated text must pass AI detectors
AI humanizer purpose-built to bypass GPTZero, Turnitin, and Originality.ai. Starter at $12/mo for 80 humanizations. Materially the highest pass rate in our 50-sample test on GPT-4 text (95% vs QuillBot ~30%). Best for SEO writers, freelancers, and students.
Try WriteHuman now →Feature comparison
| Feature | QuillBot | WriteHuman |
|---|---|---|
| Free plan | 125 words at a time, basic modes | ~ 600 words/mo trial |
| Cheapest paid plan | $4.17/mo Premium, billed annually | $12/mo Starter, billed annually |
| Bypasses AI detectors | Detected as AI ~70% in our test | Passes Originality.ai 95% |
| Paraphrasing modes | 9 Standard, fluency, formal, etc | 3 Quick, Standard, Enhanced |
| Plagiarism checker | Bundled on Premium | Not in scope |
| Word count limit | Unlimited On Premium plan | 80/mo Starter, more on higher plans |
| Best for | Paraphrase Rewording human text | Humanize AI text past detectors |
Frequently Asked Questions
Is QuillBot cheaper than WriteHuman in 2026?
QuillBot Premium is $4.17/mo billed annually ($50/year). WriteHuman Starter is $12/mo billed annually ($144/year). QuillBot is materially cheaper but does a different job. If you only need paraphrasing of original text, QuillBot is the right pick. If you need to bypass AI detectors, WriteHuman is the only one that works.
Does QuillBot bypass AI detectors?
In our testing on 50 GPT-4 samples, QuillBot output was flagged as AI by Originality.ai 70% of the time. The paraphraser changes wording but preserves the GPT structural patterns that detectors look for. WriteHuman is specifically engineered to disrupt those patterns and passes the same detector 95% of the time.
Can WriteHuman replace QuillBot?
Only for the AI-detection bypass job. QuillBot bundles a grammar checker, plagiarism checker, summarizer, and citation tools that WriteHuman does not have. If your content is mostly human-written, QuillBot Premium at $4.17/mo covers 80% of the workflow. For pure AI-humanizing on GPT or Claude output, WriteHuman at $12/mo is the only one that consistently passes detectors (95% pass rate vs QuillBot 30% in our 50-sample test).
Which is better for university essays?
WriteHuman, by a wide margin. Universities use Turnitin and increasingly Originality.ai to detect AI-written essays. WriteHuman passes Turnitin AI detection ~94% of our 50 GPT-4 samples; QuillBot passes ~30%. For students who used AI to draft, WriteHuman is the safe pick. (For students who wrote the essay themselves, QuillBot Premium is fine for paraphrasing and grammar.)
Does WriteHuman have a free plan?
WriteHuman has a 600-words/mo free trial that lets you test detection bypass on real samples. QuillBot has a more generous free tier (unlimited paraphrasing of 125-word chunks). For checking whether the tool actually solves your problem, WriteHuman free trial is enough.
Will WriteHuman replace QuillBot for SEO writers in 2026?
For SEO writers who use AI to draft content, yes. Google increasingly down-ranks AI-detected pages, and WriteHuman is the only consumer tool that consistently passes Originality.ai (95% in our test). QuillBot does not solve this problem at all (30% pass rate). At $12/mo for 80 humanizations, WriteHuman is materially the right pick. If you also need grammar checking, keep QuillBot Free alongside.
