Cloudflare Ships Dynamic Workers Open Beta: V8 Isolate-Based Agent Sandboxing 100x Faster Than Containers at $0.002/Worker/Day
Cloudflare launched Dynamic Workers in open beta — a runtime that lets AI agents execute code in V8 isolates that start in milliseconds and use a few MB of memory, roughly 100x faster to boot and 10-100x more memory efficient than containers. The Dynamic Worker Loader API lets a parent Worker instantiate a sandboxed child Worker with code specified at runtime, running on the same machine (often same thread) as the caller. Pricing: $0.002 per unique Worker loaded per day plus standard CPU/invocation costs — negligible compared to inference costs. JavaScript-first, with Python and WASM support. For builders: if you're running AI-generated code in production, this is the cheapest secure sandbox option available — replace your Docker-based agent execution with isolates.
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