Partnering with OpenAI to bring their new open models onto Cloudflare Workers AI

This post announces the integration of OpenAI's new open-weight models (GPT-OSS 120B and 20B) into Cloudflare Workers AI. It details the technical specifications of these Mixture-of-Experts (MoE) models, including their FP4 quantization and support for reasoning, tool calling, Code Interpreter, and upcoming Web Search capabilities. The post outlines the API formats supported for interacting with these models on Workers AI (Responses API, Chat Completions API) and highlights the implementation of stateful Code Interpreter execution using Cloudflare Sandboxes and Containers, with pre-warmed environments for faster startup times.