Anthropic, a smaller rival started by OpenAI defectors, has found runaway success with its programming agent, Claude Code.

OpenAI has launched Codex for Open Source, offering maintainers six months of free ChatGPT Pro and API credits amid a surge of AI-generated pull requests.

The Codex app for Windows already has over 500,000 developers in waitlist. Here's everything you need to know.

GPT-5.4 is another model update focused on usefulness for agentic tasks, particularly knowledge work. OpenAI says this is its first model explicitly aimed at computer-use tasks; like competing models, ...