QuillBot
Free paraphraser (2 modes), basic grammar checker, summarizer, limited AI Detector.
ChangedWriting
What you get
Paraphrase up to 100 words in 2 modes (Standard and Fluency), basic grammar fixes, humanize up to 100 words, summaries up to 1,200 words, limited AI Detector and AI chat.
How to get it
Sign up at quillbot.com.
What it requires
Not stated by vendor
The catch
Paraphrasing and humanizing are capped at 100 words; plagiarism checking, custom modes and advanced grammar need Premium.
From the official page ยท checked 2026-10-14
Changed
Oct 14, 2026: Free paraphrase limit is now 100 words (was 125); free plan details filled in.