Prices in GBP. Verified monthly. Always check the provider's site for the latest.
Pros & cons
Stable Diffusion
Pros
+Open source and free to run locally
+Maximum privacy — no data leaves your machine
+Highly customisable with community models
Cons
−Technical setup required
−No managed hosted version
−Quality depends heavily on prompt skill and model choice
Devin
Pros
+Plans, writes, tests, and ships production code autonomously — confirmed from official product description
+UK GDPR and EEA data rights confirmed in Cognition privacy policy with UK IDTA in use
+Free tier available with selected features — no card required to start
+Integrates with existing codebases and tools including Devin Desktop (formerly Windsurf) IDE
Cons
−Trains on user code and content by default — confirmed from Cognition privacy policy
−SOC2 and ISO 27001 not confirmed from official sources
−Max plan (£157/month) is the highest per-user price in the agents category
Our take— Devin wins
Based on our comparison of published pricing, features, and compliance data, Devin pulls ahead with enterprise-grade readiness. Stable Diffusion counters with multi-factor authentication. Devin scores 7.8/10 to Stable Diffusion's 7.5/10. Pick Devin if you need enterprise-grade readiness; pick Stable Diffusion if multi-factor authentication matters.