Prices in GBP. Verified monthly. Always check the provider's site for the latest.
Pros & cons
Microsoft Copilot
Pros
+Built into Microsoft 365
+Strong enterprise security and compliance
+SOC2 and GDPR certified
+No separate subscription if you have M365
Cons
−Limited standalone value outside Microsoft ecosystem
−Less capable than ChatGPT or Claude for general tasks
−Requires M365 licence
Sudowrite
Pros
+Explicit commitment to never training on user manuscripts — confirmed on pricing page
+Specialised fiction tools: character generation, outline, scene expansion
+Claims no rights over user content or generated output
+30+ language support across all plans
Cons
−No free tier — paid plans only
−GDPR and SOC2 not confirmed from official sources
−Fiction-only focus — not suited for marketing copy, email, or business writing
Our take— Microsoft Copilot wins
Based on our comparison of published pricing, features, and compliance data, Microsoft Copilot scores 7.8/10 to Sudowrite's 7.1/10. Microsoft Copilot pulls ahead with GDPR compliance and SOC 2 certification. Sudowrite stays close but doesn't lead on any single attribute here. If GDPR compliance matters, go Microsoft Copilot; if it doesn't, Sudowrite.