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
Adobe Firefly
Pros
+Trained only on licensed and public domain content — safe for commercial use by design
+Free tier resets daily — usable at no cost with no credit card
+Integrates with Photoshop, Illustrator, and Adobe Express
+API access available for enterprise workflow integration
Cons
−GDPR and SOC2 compliance not confirmed on officially accessed pages
−Standard credits (2,000/mo) can deplete quickly with frequent video or high-res use
−Full feature depth requires a paid Adobe Creative Cloud subscription
Our take— Adobe Firefly wins
Based on our comparison of published pricing, features, and compliance data, Adobe Firefly scores 8.1/10 to QuillBot's 7.3/10. Adobe Firefly pulls ahead with multi-factor authentication and API access. QuillBot stays close but doesn't lead on any single attribute here. Pick Adobe Firefly if multi-factor authentication matters; QuillBot is the pick if it doesn't.