Prices in GBP. Verified monthly. Always check the provider's site for the latest.
Pros & cons
HeyGen
Pros
+SOC 2 Type II certified with a dedicated Data Protection Officer
+175 languages with AI lip-sync — broadest language support in category
+Free tier includes 3 videos and a custom digital twin
+API access from Creator tier for workflow automation
Cons
−Uses user content to train models by default — opt-out required
−Credit costs for Avatar IV/V are 20× higher than Avatar III
−Business tier at £117/mo is expensive for smaller teams
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
Our take— HeyGen wins
Based on our comparison of published pricing, features, and compliance data, HeyGen scores 8.0/10 to QuillBot's 7.3/10. HeyGen pulls ahead with GDPR compliance and SOC 2 certification. QuillBot counters with a no-training-on-your-data policy. Pick HeyGen if GDPR compliance matters; pick QuillBot if a no-training-on-your-data policy matters.