OpenAI Releases GPT-5-Codex Optimized for Complex Code Refactoring and Code Reviews
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OpenAI has launched GPT-5-Codex, a specialized version of GPT-5 for complex software engineering tasks like code refactoring and reviews. The model operates autonomously for over seven hours and features adaptive reasoning that adjusts processing time based on task complexity. Testing showed 93.7% fewer tokens used for simple requests while investing more computational power on complex tasks. GPT-5-Codex achieved 51.3% accuracy in refactoring versus GPT-5's 33.9% and was trained through reinforcement learning on real-world scenarios, earning praise from engineering teams at Duolingo and Cisco Meraki.
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