Best for: Write
ChatGPT
The best-known AI chat assistant: ask anything, get a written answer.
Best for: Emails, essays, captions and cleaner writing.
Rephrase, summarise and grammar-check text in one place.
QuillBot rewrites sentences in different styles (paraphrasing), summarises long text and fixes basic grammar. Students use it to understand and reword readings.
Good for short text; the 125-word limit bites on essays.
Free ($0): paraphrase up to 125 words in 2 modes, basic grammar fixes, basic summaries, limited humanizer and AI detector.
Source: QuillBot's own pricing page, checked Nov 2026. Plans change; confirm before you pay.
Best for: Write
The best-known AI chat assistant: ask anything, get a written answer.
Best for: Write
A careful, clear AI writing and thinking partner from Anthropic.
Best for: Write
Google's AI assistant, free with any Google account.