OpenAI introduces Frontier agent management platform and new GPT-5.3-Codex model

OpenAI Group PBC today introduced a platform called Frontier that companies can use to build and manage artificial ...

OpenAI releases GPT-5.3-Codex, a coding model that helped build itself

Anthropic, one of OpenAI's chief rivals, also released a new coding model today, Claude Opus 4.6. Earlier this week, OpenAI ...

GPT-5.3 Codex Raises the Bar, but Opus 4.6 Still Owns Deep Reasoning

In benchmark tests such as Swaybench Pro and Terminal Bench, GPT-5.3 Codex consistently outperformed its predecessors, setting new standards for speed and execution. When compared to Anthropic’s Opus ...
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OpenAI Releases GPT-5.3-Codex For Agentic Coding, Says It Was Its First Model Instrumental In Creating Itself

The frontier AI labs continue releasing models that are better than their predecessors, but there’s an interesting change in how they operate ...

GPT 5.3 Codex, OpenAI's new agentic coding model, helped create itself

GPT-5.3 Codex merges the advanced coding capabilities of GPT-5.2 Codex with the reasoning and professional knowledge of GPT-5 ...