BitcoinWorld OpenAI GPT-5.3 Codex: The Stunning AI Duel That Just Redefined Software Development In a dramatic sequence of events on Monday, February 5, 2026, the artificial intelligence industry witnessed a breathtaking strategic duel. OpenAI publicly launched its advanced agentic coding model, GPT-5.3 Codex, a mere fifteen minutes after its primary competitor, Anthropic, unveiled its own …










