Best QuillBot AI Humanizer Alternatives in 2025

QuillBot is excellent for AI humanizing — but its 125-word free limit frustrates users with longer content.

The 6 Best QuillBot Alternatives

1. Undetectable AI (Best Overall) — 4.9/5

Best for: Academic content, publisher submissions.

2. ChimpWrite Free AI Humanizer (Best Free Alternative) — 4.0/5

Our free AI humanizer tool gives you 500 words per request — four times QuillBot's free limit — with no signup required.

3. Paraphraser.io (Best Unlimited Free) — 3.8/5

• Truly unlimited free tier
• Lower output quality than QuillBot

4. WordAI (Best for Content Marketing Teams) — 4.3/5

• High output quality
• 3-day free trial
• $57/month — overkill for casual use

5. Humanize.pro (Best Budget Dedicated Humanizer) — 4.2/5

• ~300 words/day free
• Specifically built for AI bypass

6. Spinbot (Best Basic Free Spinner) — 3.4/5

• Completely free, unlimited
• Low output quality, mechanical rewrites

Full Comparison Table

Bottom Line

Replace QuillBot free with ChimpWrite if you want a higher word limit without signing up. Replace QuillBot with Undetectable AI if Turnitin bypass is your priority.