QuillBot

QuillBot — Paraphrase-First Writing Suite (Learneo/Course Hero, 35M+ Users)

QuillBot (quillbot.com, founded 2017, now under Learneo Inc. ex-Course Hero, Chicago/SF, 35M+ users / 180+ countries / 140+ institutional partners) active 2026-08, no discontinuation. It is not a from-scratch generator like ChatGPT​ — it is the rephrasing/refinement seat: paste existing text → rewrite in 9 modes → grammar/plagiarism/citation/summarize/translate/humanize around it, now with a QuillBot Flow doc editor + AI Chat + AI Image Generator + PDF tools bolted on. Category ai-productivity-data; pipeline_stage none. Killer differentiator = synonym-slider paraphrasing with 9 modes (Standard/Fluency/Formal/Simple/Creative/Academic/Expand/Shorten/Humanize + Custom) in 23 languages + citation generator + 125-word free cap that’s actually usable; not Grammarly (grammar-first, weaker rewrite modes), not Wordtune (more natural sentence-level but English-only paraphrase, pricier), not ChatGPT/Claude (generation-first, no synonym control/originality suite), not ProWritingAid (long-form style report, no paraphrase modes). 2026 trap: free 125-word paraphrase cap + 2 modes only​ (real work hits the wall in one paragraph), Premium monthly $19.95 vs annual $8.33​ is a 2.4× gap, plagiarism checker capped 25,000 words/mo + less accurate than Turnitin, AI Detector/Humanizer false-positive prone, lower modes sound robotic, no real-time co-editing (Team plan = billing only, not shared canvas), paraphrasing sources ≠ originality (academic-integrity risk if misused).

1. One-line positioning

QuillBot = the rewrite bench, not the draft desk: paste a paragraph into quillbot.com or the Chrome/Edge/Safari extension or Word add-in → Paraphraser rewrites with synonym slider + mode pick (Formal for memos, Academic for papers, Creative for blogs, Shorten/Expand for length control) in 23 langs → Grammar Checker fixes in 6 langs (EN US/UK/CA/AU, DE, FR, ES, PT-BR, NL) → Summarizer condenses 6,000 words (Premium) to bullets/paragraphs → Translator 40+ langs → Citation Generator (APA/MLA/Chicago/Harvard from URL/DOI) → AI Humanizer (machine text → “human score” + tone insights) + AI Detector (text + image) + Plagiarism Checker (25k words/mo Premium) → QuillBot Flow (doc editor, 100MB Premium) + AI Chat (20 free/∞ Premium) + AI Image (3 free/300 Premium) + PDF tools (ChatPDF/merge/split/convert). Fits ai-productivity-data; pipeline_stage none (paste→paraphrase→grammar→summarize→cite→humanize). For students/academics/ESL/agencies refactoring existing copy, it’s the cheapest serious seat; for zero-draft generation, ChatGPT/Claude.

2. Core features

3. Pricing (2026-08, USD)

pricing_type = freemium-plus-single-seat-annual-lock-plus-team-quote; starting_price = $0; free_tier = "yes-permanent; paraphrase 125-word cap 2 modes only, Humanizer 125w/6 uses/day, Summarizer 1,200w, AI Chat 20, AI Image 3/day, basic grammar, Citation gen, no Plagiarism checker, translate 40+ langs"; pricing_note = "quillbot-2017-learneo-ex-course-hero-35m-users-active-2026-no-shutdown; premium-monthly-19.95-quarterly-39.95-13.31-annual-99.95-8.33-58pct-off-monthly; student-edu-extra-25pct-6.25-mo; team-7.50-6.66-5.83-seat-annual-no-coediting; plagiarism-25k-words-mo-cap-premium-only; 14-day-moneyback; gbp-eur-8.33-approx"

4. Access Type

access_type: web-app-plus-browser-extensions-plus-word-addin-plus-desktop-plus-mobile

access_display: quillbot.com (Flow editor, all tools) · 🧩 Chrome/Edge/Safari extensions (4.7★) · 📝 MS Word add-in · 🖥️ Win/mac desktop · 📱 iOS/Android · no Linux native, no offline mode, no public REST API for paraphraser

5. Reviews (2026)

Praise: 9-mode paraphraser + synonym slider = finest rewrite control in category​ (beats Wordtune mode count, beats Grammarly on restructure), free 125w tier genuinely usable for casual/ESL, Citation Generator alone saves students hours (APA/MLA/Chicago free), Translate 40+ langs + paraphrase 23 langs rare combo, Premium $8.33/yr undercuts Grammarly/Wordtune, Chrome ext 5.5M+ installs stable, Humanizer + AI Detector pair useful for post-ChatGPT cleanup, Flow doc + PDF tools make it a student one-tab.

Gripes: free 125w cap = one paragraph then wall​ (paste 3k-word essay in chunks = miserable), monthly $19.95 vs annual $8.33​ quiet 2.4× tax, plagiarism checker 25k words/mo + false negatives vs Turnitin/Windsted (don’t submit to uni on it alone), AI Detector/Humanizer false-positive on human text, Standard/Fluency modes sound mechanical (synonym slider high = robotic), no real co-editing​ (Team = billing dashboard only, not shared canvas like Notion/GDocs), grammar depth still behind Grammarly on context, long-doc paste lags in browser, academic misuse risk (paraphrasing sources ≠ originality — integrity violations if abused), AI Chat/Image are filler vs ChatGPT/Midjourney.

6. Best for / Not for

7. Competitors