Comparison 2026

QuillBot vs Grammarly

QuillBot and Grammarly are writing assistants that now include AI humanizers, but both say those humanizers are not meant to beat AI detectors. Here is how they compare with a tool built for that.

Quick Verdict

Neither was built for AI bypass. HumanizeThisAI is the tool you actually need.

QuillBot (AI Humanizer with Basic and Advanced modes) and Grammarly (free humanizer plus a Humanizer agent) both rewrite AI text for tone and flow, and both say these tools are not for evading AI detection. HumanizeThisAI is purpose-built for AI humanization with 99%+ bypass rates.

Features

Feature Comparison

Feature comparison between QuillBot, Grammarly, and HumanizeThisAI
FeatureQuillBotGrammarlyHumanizeThisAI
Grammar Checking
Paraphrasing
Free TierUp to 125 words per run100 AI prompts/mo + free humanizer1,000 words/month
Purpose-Built for AI Bypass
Plagiarism CheckerPremiumPro
Humanizer languages5612 (Creator and up)

Looking for Something Better?

QuillBot and Grammarly are great for writing, but neither is built for AI bypass. HumanizeThisAI is the purpose-built humanizer you need. Try it free with no signup.

Try HumanizeThisAI FreeSee HumanizeThisAI plans and pricing

FAQ

QuillBot vs Grammarly FAQ

Common questions about QuillBot, Grammarly, and HumanizeThisAI.

Is QuillBot better than Grammarly for AI humanization?+
Both now have AI humanizers. QuillBot's has a free Basic mode (up to 125 words per run) and an Advanced mode on Premium, in 5 languages. Grammarly's has a free web tool and a Humanizer agent with four voices, a custom voice and six languages. Both say their humanizers are not meant to bypass AI detectors. HumanizeThisAI is built for that, and its paid plans cost less.
How much does QuillBot cost compared to Grammarly?+
As of Oct 2026, QuillBot Premium is $19.95/month, $79.95 every 6 months or $99.95/year ($8.33/mo). Grammarly Pro is $30/month, $60 per quarter or $144/year ($12/mo). Both have free plans. HumanizeThisAI Starter is $5.99/month or $2.99/month billed yearly.
Can QuillBot or Grammarly bypass Turnitin?+
Neither is designed to. QuillBot and Grammarly both say their humanizers are not for evading AI detection, and Turnitin has detected AI text altered by paraphrasing tools since July 2024. HumanizeThisAI delivers a 99.8%+ Turnitin bypass rate. We recommend testing all three with your specific content.
Which AI detectors does HumanizeThisAI bypass?+
HumanizeThisAI achieves 99%+ bypass rates against GPTZero, Turnitin, Originality.ai, Copyleaks, and ZeroGPT.
Is there a free plan for HumanizeThisAI?+
Yes. Try it with no signup (200 words per run, 3 runs a day), or create a free account for 1,000 words a month. No credit card needed.
Does HumanizeThisAI preserve the original meaning?+
Yes. Our AI humanizer is designed to preserve your original meaning, arguments, and structure while transforming the writing patterns that AI detectors look for.