Cloudflare Workers

CPU time is the real billing dimension, not requests. The included 30M CPU-ms sounds generous, but a single image-processing Worker using 50ms CPU per request exhausts it after just 600K requests/month, well under the 10M request allowance

KV storage charges separately

$0.50/M reads, $5.00/M writes, $0.50/GB-month storage. A medium-traffic cache with 5M reads and 500K writes/month adds $4.00/month on top of the base $5

Durable Objects pricing is complex

$0.15/M requests plus $12.50/M GB-seconds of duration. A real-time collaborative app with 1M DO requests and persistent WebSocket connections can easily cost $20-50/month in DO charges alone

D1 database bills per row read/written after generous free tiers (25B reads, 50M writes). Heavy read workloads stay cheap, but write-heavy apps at $1.00/M rows written add up: 10M writes/month = $10/month extra

R2 storage has no egress fees but Class A operations (writes, lists) cost $4.50/M. A CMS uploading/listing thousands of objects daily can see $5-15/month in operation fees separate from storage

Workers Logs charge $0.60/M log messages beyond 20M included. Verbose logging on a high-traffic endpoint generates 50M+ messages/month = $18/month for logs alone

Free tier has hard limits

10ms CPU per invocation (not 30 seconds like paid), 100K requests/day (resets daily, not monthly), no Cron Triggers, no Durable Objects

Workers for Platforms (multi-tenant) costs $25/month base, 5x the standard paid plan, with separate per-tenant billing