// BROWNING DIGITAL / BLOG

Zero-Cost AI Infrastructure.
Real Numbers.

I'm Devin. I build AI businesses on $7/month infrastructure. This blog is where I document what works — Cloudflare Workers, Claude API, free tier strategies, and the architecture patterns that let one person run what used to require a team and a $500/month SaaS budget.

Building a $7/Month AI Business: Complete Infrastructure Guide
The exact stack I use: Cloudflare Workers (free tier), R2 storage ($0.015/GB), KV for state, and Claude API at $0.003/request. Total monthly cost with real traffic: $6.83. Here's every component, every decision, and every cost.
Read the guide →
Cloudflare Workers for AI: Tutorial + Production Setup
Deploy your first AI endpoint in 20 minutes. Workers run at the edge in 300+ locations, cold start in under 5ms, and the free tier handles 100,000 requests/day. I'll show you the exact wrangler.toml, the Claude integration, and the production patterns that actually scale.
Read the tutorial →
How I Replaced $300/Month SaaS with Free Tier Tools
Line-by-line audit of my old $312/month SaaS stack vs what I run today for $7. Notion → Cloudflare KV. Zapier → Workers Cron. Airtable → Supabase free tier. ConvertKit → self-hosted email via Cloudflare Email Routing. Every substitution with a migration guide.
Read the case study →
Zero-Cost AI Stack: Architecture Patterns for Solopreneurs
Three proven architecture patterns — the Event-Driven Agent, the Async Pipeline, and the Edge Cache Layer — all built on free tiers. Each pattern includes a diagram, wrangler config, and real cost data from production deployments handling 50K+ requests/month.
Read the architecture guide →
Cloudflare R2 vs S3: Cost Comparison for AI Projects
At 100GB storage and 10M requests/month, S3 costs $23.40. R2 costs $1.50. That's an 84% reduction. For AI projects storing embeddings, model outputs, and training data, the egress-free model changes the math completely. Here's the full breakdown with a calculator.
Read the comparison →

Skip the Tutorial. Get the Kit.

The Zero-Cost AI Kit includes the complete Cloudflare Workers templates, Claude API integration boilerplate, wrangler configs, and the exact architecture I documented in these posts — ready to deploy in under an hour.

Get the Zero-Cost AI Kit — $47