OpenAI has launched Codex, a new agentic coding tool for software developers, along with its powerful new model, GPT-5.3 Codex. This advanced model transforms Codex from a code-writing and reviewing tool into one capable of performing a wide range of professional tasks on a computer, thereby broadening software development accessibility. OpenAI claims GPT-5.3 Codex can create complex applications from scratch and is 25% faster than its predecessor, GPT-5.2. Notably, it’s also the first OpenAI model that played a role in its own creation, assisting in debugging and performance evaluation. This release closely follows Anthropic’s launch of its own agentic coding model. The two companies had initially planned a simultaneous release, but Anthropic advanced its launch by 15 minutes, narrowly preceding OpenAI. The article also mentions related AI news, including a backlash over OpenAI retiring GPT-4o, OpenAI’s new enterprise AI agent management tools, and Sam Altman’s reaction to Anthropic’s Super Bowl ads.
