Christopher Holloway
Christopher Holloway is the founder and director of Progressive Robot, a UK-based technology company. A full-stack engineer with more than two decades of experience, he works across PHP development, ecommerce, Linux infrastructure, technical SEO and AI automation, and writes here on technology, AI, hardware and software.
Simplex rethinks software development with Codex
Simplex boosts software development with ChatGPT Enterprise and Codex, reduci...
An open-source spec for orchestration: Symphony
Learn how Symphony, an open-source spec for Codex orchestration, turns issue ...
The next evolution of the Agents SDK
OpenAI updates the Agents SDK with native sandbox execution and a model-nativ...
Speeding up agentic workflows with WebSockets in the...
A deep dive into the Codex agent loop, showing how WebSockets and connection-...
OpenAI Codex and Figma launch seamless code-to-desig...
OpenAI and Figma launch a new Codex integration that connects code and design...
Introducing EVMbench
OpenAI and Paradigm introduce EVMbench, a benchmark evaluating AI agents’ abi...
Harness engineering: leveraging Codex in an agent-fi...
By Ryan Lopopolo, Member of the Technical Staff
Unlocking the Codex harness: how we built the App Se...
Learn how to embed the Codex agent using the Codex App Server, a bidirectiona...
Helping developers build safer AI experiences for teens
OpenAI releases prompt-based teen safety policies for developers using gpt-os...
Codex Security: now in research preview
Codex Security is an AI application security agent that analyzes project cont...
Introducing the Codex app
Introducing the Codex app for macOS—a command center for AI coding and softwa...
OpenAI Launches GPT-5.5 Biological Safety Bug Bounty...
OpenAI has launched a specialized bug bounty program targeting GPT-5.5 to ide...
OpenAI Expands API Capabilities With New Computer En...
OpenAI has integrated a sandboxed computer environment into its Responses API...
Introducing Advanced Account Security
Introducing Advanced Account Security: phishing-resistant login, stronger rec...