Do Son OpenAI's GPT-5.3-Codex is here. With 400K context, xhigh reasoning, and self-optimization, it’s the first agentic model designed to build and debug itself.
OpenAI's GPT-5.3-Codex is here. With 400K context, xhigh reasoning, and self-optimization, it’s the first agentic model designed to build and debug itself.