QuillBot
The go-to for paraphrasing, rewriting and tightening existing text.
Standout features
QuillBot reshapes text you already have — paraphrasing across modes, summarizing, and cleaning up grammar.
Worldwide search interest, indexed 0–100 · Google Trends.
QuillBot is the specialist for paraphrasing and rewriting — reshaping existing text rather than drafting from scratch.
- Part of Learneo (Course Hero); founded 2017.
- Multi-mode paraphraser plus a summarizer.
- Grammar checker, citations and AI detection too.
- 75M+ registered users.
QuillBot is built around transforming text.
- Paraphraser with multiple rewriting modes.
- Summarizer for long documents.
- Grammar checker, citation generator, AI detector.
- Browser, Word and Google Docs integrations.
A generous free tier, with affordable Premium.
QuillBot fits people who rework text a lot.
- Students and writers who rephrase frequently.
- ESL writers polishing and clarifying.
- Anyone condensing or tidying existing text.
- People who need to generate original content (use an assistant).
- Those wanting a full, all-in-one writing suite.
No tool is perfect — the trade-offs to weigh:
- Reshapes, doesn’t originate — it rewrites more than it creates.
- Free word limits on the paraphraser.
- Integrity debates around paraphrasing tools.
- AI-detection results can be inconsistent.
- ✓Excellent multi-mode paraphrasing
- ✓Summarizer, grammar and citations
- ✓Handy browser, Docs and Word add-ins
- ✓Generous free tier
- ✓Affordable Premium
- ✕Reshapes text rather than creating it
- ✕Free tier has word limits
- ✕Paraphrasing raises integrity questions
- ✕AI-detection bypass is inconsistent
Students and writers rely on QuillBot to rephrase and tighten text fast, and they rate the paraphraser and summarizer highly for the price. The caveats are word limits on the free tier and ongoing debates about paraphrasing and academic integrity. Sentiment is positive among people whose main need is reworking existing writing.
QuillBot is part of Learneo, Inc. (formerly Course Hero), an education-technology company.
Company figures are drawn from public disclosures and reputable trackers (gathered Jun 2026). User and revenue numbers are estimates and move fast.
Pick up to two other coding tools to see them head-to-head on the same rubric.