Prices in GBP. Verified monthly. Always check the provider's site for the latest.
Pros & cons
Gamma
Pros
+SOC 2 Type II certified and GDPR-compliant with DPA available
+Generous free tier with no credit card required
+Exports to PDF, PPTX, and Google Slides for broad compatibility
+Creates presentations, documents, and web pages from a single prompt
Cons
−Free plan limited to 400 one-time credits — not recurring
−Advanced AI image models require Plus tier or above
−Less suited to highly branded enterprise templates
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
Our take— Gamma wins
Based on our comparison of published pricing, features, and compliance data, Gamma pulls ahead with a no-training-on-your-data policy. HeyGen stays close but doesn't lead on any single attribute here. Gamma scores 8.0/10 to HeyGen's 8.0/10. Pick Gamma if a no-training-on-your-data policy matters; HeyGen is the pick if it doesn't.