Introduction

This is a technical comparison of Replicate and Cloudflare Workers AI. It covers how each system handles request routing, autoscaling, resource management, model loading, and observability. When possible, links to source code are included.

Audience

Engineers and engineering leaders on the Workers AI and adjacent ai-platform teams. Sections are written to be useful both as reference material for people building these systems and as context for people making decisions about them.

How to read this

Each section covers both platforms, ending with a “Key Differences” summary. Sections are self-contained — read them in order or jump to what’s relevant.

Scope

This comparison covers the inference serving path and supporting infrastructure: how requests arrive, get routed to models, execute, and return results. In general, it does not cover ancillary tooling or browser level user experience topics.