Prices in GBP. Verified monthly. Always check the provider's site for the latest.
Pros & cons
QuillBot
Pros
+Free tier paraphrases up to 125 words with no time limit
+9 paraphrase modes including Formal, Simple, Creative, and Expand
+Premium at £4/mo (annual) is the lowest price in the writing category
+Plagiarism checker and AI Detector bundled with Premium
Cons
−GDPR and SOC2 not confirmed from official sources
−Free tier capped at 125 words per paraphrase — limiting for longer content
−Focused on paraphrasing — not a full-document AI writing assistant
Amazon Q Developer
Pros
+GDPR and SOC2 certified — inherits AWS enterprise compliance stack
+Pro tier automatically opted out of data training — confirmed on pricing page
+Deep AWS integration: understands IAM, CloudFormation, and AWS APIs natively
+Free tier includes 50 agentic requests/month — usable at no cost
Cons
−Free tier uses data for service improvement by default — opt-out required
−Most valuable inside the AWS ecosystem; limited appeal outside it
−Pro IP indemnity and admin dashboard only on paid plan
Our take— Amazon Q Developer wins
Based on our comparison of published pricing, features, and compliance data, Amazon Q Developer scores 7.8/10 to QuillBot's 7.3/10. Amazon Q Developer pulls ahead with GDPR compliance and SOC 2 certification. QuillBot counters with a no-training-on-your-data policy. Pick Amazon Q Developer if GDPR compliance matters; pick QuillBot if a no-training-on-your-data policy matters.