AWS S3 vs Cloudflare R2 vs Backblaze B2 for AI Agents

Object storage for AI agent workloads Object storage is infrastructure agents touch constantly - storing retrieved data, serving assets, archiving outputs. The choice matters than it looks: egress fees, SDK breadth, and auth complexity all affect how autonomously an agent can operate. Provider AN Score Execution Access Tier AWS S3 8.1/10 8.6 7.2 L4 Native Cloudflare R2 7.4/10 7.6 7.0 L3 Ready Backblaze B2 6.6/10 7.0 5.8 L3 Ready The real question is not "which is best" - it's "what does your agent read?" If your agent reads than it writes, R2 wins on total cost despite a lower AN Score.